MESON Chess Problem Database
Problem Display
PID: 100003 (1n5n/4B3/1p1NpN1p/bRppkppR/1pQ3PP/1P2K3/8/8 w - - 0 1)
Keirans, Arturs
Comm., Magyar Sakkvilag, 1933
#2
10 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...dxc4
- 2.Sxc4#
- 1...d4+
- 2.Qxd4#
- 1...fxg4
- 2.Sxg4#
- 2.Qf4#
- 1...f4+
- 2.Qxf4#
- 1...gxh4
- 2.Qf4#
- 1...Sa6
- Tries
- 1.Kf3?
- 1...fxg4+
- 2.Sxg4#
- 1...gxh4
- 2.Qf4#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...d4
- 2.Qe2#
- 1...f4
- 2.Qxf4#
- 1...dxc4!
- 1...fxg4+
- 1.Sde8?
- threat
- 2.Bd6#
- 1...d4+
- 2.Qxd4#
- 1...f4+
- 2.Qxf4#
- 1...fxg4
- 2.Qf4#
- 1...Sf7!
- threat
- 1.Rxc5?
- threat
- 2.Qd4#
- 1...f4+
- 2.Qxf4#
- 1...Sc6
- 2.Sd7#
- 1...bxc5!
- threat
- 1.Rxg5?
- threat
- 2.Qf4#
- 1...d4+
- 2.Qxd4#
- 1...dxc4
- 2.Sxc4#
- 1...Sg6
- 2.Sf7#
- 1...hxg5!
- threat
- 1.Rxh6?
- 1...d4+
- 2.Qxd4#
- 1...dxc4
- 2.Sxc4#
- 1...fxg4
- 2.Sxg4#
- 1...gxh4
- 2.Qf4#
- 1...Sg6
- 2.Sf7#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf7
- 2.Sxf7#
- 1...f4+!
- 1...d4+
- 1.Qf1?
- 1...f4+
- 2.Qxf4#
- 1...fxg4
- 2.Sxg4#
- 2.Qf4#
- 1...gxh4
- 2.Qf4#
- 1...Sg6
- 2.Sf7#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf7
- 2.Sxf7#
- 1...c4
- 2.Sxc4#
- 1...d4+!
- 1...f4+
- 1.Qc3+?
- 1...d4+
- 2.Qxd4#
- 1...bxc3!
- 1...d4+
- 1.Qxb4?
- 1...d4+
- 2.Qxd4#
- 1...f4+
- 2.Qxf4#
- 1...cxb4
- 2.Sc4#
- 1...fxg4
- 2.Sxg4#
- 2.Qf4#
- 1...gxh4
- 2.Qf4#
- 1...Sg6
- 2.Sf7#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf7
- 2.Sxf7#
- 1...c4
- 2.Sxc4#
- 1...Bxb4!
- 1...d4+
- 1.Qe4+?
- 1...dxe4
- 2.Sc4#
- 1...fxe4!
- 1...dxe4
- 1.gxf5?
- threat
- 2.Sg4#
- 1...d4+
- 2.Qxd4#
- 1...exf5
- 2.Qxd5#
- 1...g4
- 2.Sxg4#
- 2.Qf4#
- 1...dxc4!
- threat
- 1.hxg5?
- threat
- 2.Qf4#
- 1...d4+
- 2.Qxd4#
- 1...f4+
- 2.Qxf4#
- 1...dxc4
- 2.Sxc4#
- 1...Sg6
- 2.Sf7#
- 1...hxg5!
- threat
- 1.Kf3?
- Keys
- 1.Qe2!
- 1...d4+
- 2.Kf3#
- 1...f4+
- 2.Kd3#
- 1...fxg4
- 2.Sxg4#
- 1...gxh4
- 2.Qh2#
- 1...Sg6
- 2.Sf7#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf7
- 2.Sxf7#
- 1...c4
- 2.Sxc4#
- 1...d4+
- 1.Qe2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- S(l);N_GUARD::S(H)
- S(l);N_GUARD::S(H),XS(l)
- P(d);P_SPINP(c),XQ(C)::S(H),XP(d)
- P(d);CHECK,P_SPINP(c)::QAB1(C),XP(d)
- P(f);CHECK,P_SPINP(g)::QAB1(C),XP(f)
- P(g);N_GUARD,P_SPINP(f),XP(E)::QAB1(C)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- P(f);CHECK,P_SPINP(g),XP(D)::S(I),XP(f)
- P(g);N_GUARD,P_SPINP(f),XP(E)::QAB1(C)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- S(l);N_GUARD::S(H)
- S(l);N_GUARD::S(H),XS(l)
- P(d);P_SPINP(c),SBLOCK::QAR(C)
- P(f);P_SPINP(g)::QAB1(C),XP(f)
- Refutation
- P(d);P_SPINP(c),XQ(C)
- Try
- S(H);
- Threat
- B(J)
- Vars
- P(d);CHECK,P_SPINP(c)::QAB1(C),XP(d)
- P(f);CHECK,P_SPINP(g)::QAB1(C),XP(f)
- P(f);P_SPINP(g),XP(D)::QAB1(C)
- Refutation
- S(l);
- Try
- R(F);P_PINP(d),XP(c)
- Threat
- QAB1(C)
- Vars
- P(f);CHECK,S_CUTP(g)::QAB1(C),XP(f)
- S(k);N_GUARD::S(I)
- Refutation
- P(h);N_SPINP(d),XR(F)
- Try
- R(G);P_PINP(f),XP(g)
- Threat
- QAB1(C)
- Vars
- P(d);CHECK,N_SPINP(f),P_SPINP(c)::QAB1(C),XP(d)
- P(d);N_SPINP(f),P_SPINP(c),XQ(C)::S(H),XP(d)
- S(l);N_GUARD::S(H)
- Refutation
- P(j);N_SPINP(f),XR(G)
- Try
- R(G);XP(j)
- Vars
- P(d);CHECK,P_SPINP(c)::QAB1(C),XP(d)
- P(d);P_SPINP(c),XQ(C)::S(H),XP(d)
- P(f);XP(D)::S(I),XP(f)
- P(g);N_GUARD,XP(E)::QAB1(C)
- S(l);N_GUARD::S(H)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- S(l);N_GUARD::S(H),XS(l)
- Refutation
- P(f);CHECK
- Try
- Q(C);
- Vars
- P(f);CHECK,P_SPINP(g)::QAB1(C),XP(f)
- P(g);N_GUARD,P_SPINP(f),XP(E)::QAB1(C)
- S(l);N_GUARD::S(H)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- S(l);N_GUARD::S(H),XS(l)
- P(c);P_SPINP(d)::S(H),XP(c)
- Refutation
- P(d);CHECK,P_SPINP(c)
- Try
- Q(C);CHECK
- Vars
- P(d);CHECK,P_SPINP(d),S_CUTP(c)::QAB1(C),XP(d)
- Refutation
- P(a);XQ(C)
- Try
- Q(C);XP(a)
- Vars
- P(d);CHECK,P_SPINP(c)::QAB1(C),XP(d)
- P(f);CHECK,P_SPINP(g)::QAB1(C),XP(f)
- P(c);P_SPINP(d),XQ(C)::S(H)
- P(g);N_GUARD,P_SPINP(f),XP(E)::QAB1(C)
- S(l);N_GUARD::S(H)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- S(l);N_GUARD::S(H),XS(l)
- P(c);P_SPINP(d)::S(H),XP(c)
- Refutation
- B(b);XQ(C)
- Try
- Q(C);CHECK
- Vars
- P(d);P_SPINP(c),XQ(C)::S(H)
- Refutation
- P(f);P_SPINP(g),XQ(C)
- Try
- P(D);XP(f)
- Threat
- S(I)
- Vars
- P(d);CHECK,P_SPINP(c)::QAB1(C),XP(d)
- P(i);N_GUARD,XP(D)::QAR1(C),XP(d)
- Refutation
- P(d);P_SPINP(c),XQ(C)
- Try
- P(E);XP(g)
- Threat
- QAB1(C)
- Vars
- P(d);CHECK,P_SPINP(c)::QAB1(C),XP(d)
- P(f);CHECK::QAB1(C),XP(f)
- P(d);P_SPINP(c),XQ(C)::S(H),XP(d)
- S(l);N_GUARD::S(H)
- Refutation
- P(j);XP(E)
- Try
- Actual
- Q(C);
- Vars
- P(d);CHECK,P_SPINP(c),SBLOCK::QAR(C)+K(B)
- P(f);CHECK,P_SPINP(g),SBLOCK::QAR(C)+K(B)
- P(f);P_SPINP(g),XP(D)::S(I),XP(f)
- P(g);P_SPINP(f),XP(E)::QAB(C)
- S(l);N_GUARD::S(H)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- S(l);N_GUARD::S(H),XS(l)
- P(c);P_SPINP(d)::S(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).