MESON Chess Problem Database
Problem Display
PID: 92938 (5b1N/2npr1pb/2nR2p1/2Bpk1P1/1p3R2/1BpQP3/2K5/8 w - - 0 1)
Andersen, Idon Bruno Hovedskou
Problem Schack, 1953
#2
9 + 12
| 6490 | yacpdb | 2009 |
| 15148 | Sadier Collection | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sd4+
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4
- 2.Qe4#
- 1...Re6
- Tries
- 1.Kb1?
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4
- 2.Qe4#
- 1...c2+!
- 1...Re6
- 1.Kc1?
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4
- 2.Qe4#
- 1...c2!
- 1...Re6
- 1.Kd1?
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4
- 2.Qe4#
- 1...c2+!
- 1...Re6
- 1.Ba2?
- 1...Sd4+
- 2.Qxd4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4
- 2.Qe4#
- 1...b3+!
- 1...Sd4+
- 1.Ba4?
- 1...Sd4+
- 2.Qxd4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4
- 2.Qe4#
- 1...b3+!
- 1...Sd4+
- 1.Bc4?
- 1...Sd4+
- 2.Qxd4#
- 1...dxc4
- 2.Qe4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4
- 2.Qe4#
- 1...b3+!
- 1...Sd4+
- 1.Bxd5?
- threat
- 2.Qe4#
- 1...Sd4+
- 2.Qxd4#
- 1...b3+!
- threat
- 1.Bxb4?
- 1...Sd4+
- 2.Qxd4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4
- 2.Qe4#
- 1...Sxb4+!
- 1...Sd4+
- 1.Rf1?
- 1...Sd4+
- 2.Qxd4#
- 2.exd4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4!
- 1...Sd4+
- 1.Rf2?
- 1...Sd4+
- 2.Qxd4#
- 2.exd4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4!
- 1...Sd4+
- 1.Rf3?
- 1...Sd4+
- 2.Qxd4#
- 2.exd4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4!
- 1...Sd4+
- 1.Rxf8?
- 1...Sd4+
- 2.Qxd4#
- 2.exd4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4!
- 1...Sd4+
- 1.Rxd5+?
- 1...Sxd5
- 2.Qe4#
- 2.Qxd5#
- 1...Ke6!
- 1...Sxd5
- 1.Rdf6?
- threat
- 2.Bd6#
- 1...Sd4+
- 2.Bxd4#
- 2.Qxd4#
- 2.exd4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Sb5
- 2.Qxd5#
- 1...Se6
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d6
- 2.Bxd6#
- 1...gxf6!
- threat
- 1.Rxg6?
- threat
- 2.Bd6#
- 2.Rf5#
- 2.Qf5#
- 1...Sd4+
- 2.Bxd4#
- 2.Qxd4#
- 1...Re6
- 2.Sf7#
- 2.Rf5#
- 2.Qf5#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 2.Rf5#
- 2.Qf5#
- 1...Sb5
- 2.Rf5#
- 2.Qf5#
- 2.Qxd5#
- 1...Se6
- 2.Rf5#
- 2.Qf5#
- 2.Qxd5#
- 1...Se8
- 2.Rf5#
- 2.Qf5#
- 2.Qxd5#
- 1...d6
- 2.Bxd6#
- 2.Rf5#
- 2.Qf5#
- 1...Bxg6!
- threat
- 1.Qd1?
- 1...Sd4+
- 2.Qxd4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Sxg6#
- 1...Sa5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Se6
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4!
- 1...Sd4+
- 1.Kb1?
- Keys
- 1.Qxg6!
- 1...Bxg6+
- 2.Sxg6#
- 1...Sd4+
- 2.Bxd4#
- 1...d4
- 2.Re4#
- 1...Re6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Re8
- 2.Sf7#
- 1...Bg8
- 2.Qf5#
- 1...Sa5
- 2.Bd4#
- 1...Sa7
- 2.Bd4#
- 1...Sb8
- 2.Bd4#
- 1...Sd8
- 2.Bd4#
- 1...Sb5
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Se6
- 2.Rxd5#
- 1...Sa8
- 2.Rxd5#
- 1...Se8
- 2.Rxd5#
- 1...Bxg6+
- 1.Qxg6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 11
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);CHECK,N_GUARD::QAB1(C),XS(e)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- P(c);N_GUARD::QAR1(C)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C),XS(e)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- P(c);N_GUARD::QAR1(C)
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C),XS(e)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- P(c);N_GUARD::QAR1(C)
- Refutation
- P(a);
- Try
- K(A);S_FLIGHT
- Vars
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C),XS(e)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- P(c);N_GUARD::QAR1(C)
- Refutation
- P(a);CHECK
- Try
- B(B);
- Vars
- S(e);CHECK,N_GUARD::QAB1(C),XS(e)
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- P(c);N_GUARD::QAR1(C)
- Refutation
- P(b);CHECK
- Try
- B(B);
- Vars
- S(e);CHECK,N_GUARD::QAB1(C),XS(e)
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- P(c);N_GUARD::QAR1(C)
- Refutation
- P(b);CHECK
- Try
- B(B);
- Vars
- S(e);CHECK,N_GUARD::QAB1(C),XS(e)
- P(c);N_GUARD,XB(B)::QAR1(C)
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- P(c);N_GUARD::QAR1(C)
- Refutation
- P(b);CHECK
- Try
- B(B);XP(c)
- Threat
- QAR1(C)
- Vars
- S(e);CHECK,N_GUARD::QAB1(C),XS(e)
- Refutation
- P(b);CHECK
- Try
- B(F);XP(b)
- Vars
- S(e);CHECK,N_GUARD::QAB1(C),XS(e)
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- P(c);N_GUARD::QAR1(C)
- Refutation
- S(e);CHECK,XB(F)
- Try
- R(E);
- Vars
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- Refutation
- P(c);
- Try
- R(E);
- Vars
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- Refutation
- P(c);
- Try
- R(E);
- Vars
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- Refutation
- P(c);
- Try
- R(E);XB(l)
- Vars
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- Refutation
- P(c);
- Try
- R(H);CHECK,XP(c)
- Refutation
- K(d);P-FLIGHT
- Try
- R(H);
- Threat
- B(F)
- Vars
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- S(g);N_GUARD::QAR1(C),XP(c)
- P(h);::B(F),XP(h)
- Refutation
- P(j);XR(H)
- Try
- R(H);XP(f)
- Threat
- DUALS(3)
- Vars
- R(i);N_GUARD::S(I),XR(i)
- Refutation
- B(k);P_PINQ(C),XR(H)
- Try
- Q(C);
- Vars
- S(e);CHECK,N_GUARD::QAB1(C),XS(e)
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD::S(I),XP(f)
- S(e);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XP(c)
- Refutation
- P(c);
- Try
- Actual
- Q(C);P_SPINQ(C),XP(f)
- Vars
- B(k);CHECK,XQ(C)::S(I),XB(k)
- S(e);CHECK,N_GUARD::B(F),XS(e)
- P(c);N_GUARD::R1(E)
- R(i);N_GUARD::S(I)
- R(i);N_GUARD::S(I),XR(i)
- B(k);N_GUARD,N_PINQ(C)::QAR1(C)
- S(e);N_GUARD::B(F)
- S(g);N_GUARD::R1(H),XP(c)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).