MESON Chess Problem Database
Problem Display
PID: 90295 (1b6/2pR4/4p1n1/Ppk1P1B1/bpP1Q3/1R6/3N4/K2n4 w - - 0 1)
Gevers, Raymond
Die Schwalbe, 1934
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bxb3
- 2.Sxb3#
- 1...Ba7
- 2.Rxc7#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Sxe5
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...bxc4
- 2.Qxc4#
- 1...c6
- 2.Qd4#
- 1...Bxb3
- Tries
- 1.Kb1?
- 1...Bxb3
- 2.Sxb3#
- 1...Sxe5
- 2.Be7#
- 1...bxc4
- 2.Qxc4#
- 1...Ba7
- 2.Rxc7#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...c6
- 2.Qd4#
- 1...Sc3+!
- 1...Bxb3
- 1.Ka2?
- 1...Bxb3+
- 2.Sxb3#
- 1...Sxe5
- 2.Be7#
- 1...bxc4
- 2.Qxc4#
- 1...Ba7
- 2.Rxc7#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...c6
- 2.Qd4#
- 1...Sc3+!
- 1...Bxb3+
- 1.Bh6?
- 1...Bxb3
- 2.Sxb3#
- 1...Sxe5
- 2.Bf8#
- 1...bxc4
- 2.Qxc4#
- 1...Ba7
- 2.Rxc7#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Bf8#
- 1...Sh4
- 2.Bf8#
- 1...Sf8
- 2.Bxf8#
- 1...Sh8
- 2.Bf8#
- 1...c6
- 2.Qd4#
- 1...Se7!
- 1...Bxb3
- 1.Rdd3?
- 1...Bxb3
- 2.Sxb3#
- 1...Sxe5
- 2.Be7#
- 1...bxc4
- 2.Qxc4#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...c6
- 2.Qd4#
- 1...Ba7!
- 1...Bxb3
- 1.Rd5+?
- 1...exd5
- 2.Qxd5#
- 1...Kc6!
- 1...exd5
- 1.Rd6?
- threat
- 2.Rc6#
- 2.Qc6#
- 2.Qd4#
- 1...Sxe5
- 2.Qd4#
- 2.Qxe5#
- 1...bxc4
- 2.Qxc4#
- 1...Se7
- 2.Qd4#
- 1...c6
- 2.Rxc6#
- 2.Qxc6#
- 2.Qd4#
- 1...cxd6!
- threat
- 1.Rf7?
- 1...Bxb3
- 2.Sxb3#
- 1...Sxe5
- 2.Be7#
- 1...bxc4
- 2.Qxc4#
- 1...Ba7
- 2.Rxc7#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...c6!
- 1...Bxb3
- 1.Rg7?
- 1...Bxb3
- 2.Sxb3#
- 1...Sxe5
- 2.Be7#
- 1...bxc4
- 2.Qxc4#
- 1...Ba7
- 2.Rxc7#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...c6!
- 1...Bxb3
- 1.Rh7?
- 1...Bxb3
- 2.Sxb3#
- 1...Sxe5
- 2.Be7#
- 1...bxc4
- 2.Qxc4#
- 1...Ba7
- 2.Rxc7#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...c6!
- 1...Bxb3
- 1.Rd8?
- 1...Bxb3
- 2.Sxb3#
- 1...Sxe5
- 2.Be7#
- 1...bxc4
- 2.Qxc4#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...c6
- 2.Qd4#
- 1...Ba7!
- 1...Bxb3
- 1.Kb1?
- Keys
- 1.Qb7!
- 1...Bxb3
- 2.Qxb5#
- 1...Sxe5
- 2.Be7#
- 1...bxc4
- 2.Se4#
- 1...Ba7
- 2.Qxc7#
- 1...Sb2
- 2.Be3#
- 1...Sf2
- 2.Be3#
- 1...Sc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 1...Sf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Se7
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...c6
- 2.Qb6#
- 1...Bxb3
- 1.Qb7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(b);XR(C)::S(B),XB(b)
- B(i);N_GUARD::R(I),XP(h)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD,XP(G)::B(H)
- S(g);N_GUARD::B(H),XS(g)
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- P(h);SBLOCK::QAB1(E)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- B(b);XR(C)::S(B),XB(b)
- S(g);N_GUARD,XP(G)::B(H)
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- B(i);N_GUARD::R(I),XP(h)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- P(h);SBLOCK::QAB1(E)
- Refutation
- S(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- B(b);CHECK,XR(C)::S(B),XB(b)
- S(g);N_GUARD,XP(G)::B(H)
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- B(i);N_GUARD::R(I),XP(h)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- P(h);SBLOCK::QAB1(E)
- Refutation
- S(a);CHECK
- Try
- B(H);
- Vars
- B(b);XR(C)::S(B),XB(b)
- S(g);N_GUARD,XP(G)::B(H)
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- B(i);N_GUARD::R(I),XP(h)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- P(h);SBLOCK::QAB1(E)
- Refutation
- S(g);
- Try
- R(I);
- Vars
- B(b);XR(C)::S(B),XB(b)
- S(g);N_GUARD,XP(G)::B(H)
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- P(h);SBLOCK::QAB1(E)
- Refutation
- B(i);
- Try
- R(I);CHECK
- Vars
- P(f);OGATE,XR(I)::QAR1(E),XP(f)
- Refutation
- K(e);P-FLIGHT
- Try
- R(I);
- Threat
- DUALS(3)
- Vars
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- S(g);::QAB1(E)
- Refutation
- P(h);XR(I)
- Try
- R(I);
- Vars
- B(b);XR(C)::S(B),XB(b)
- S(g);N_GUARD,XP(G)::B(H)
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- B(i);N_GUARD::R(I),XP(h)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- P(h);
- Try
- R(I);
- Vars
- B(b);XR(C)::S(B),XB(b)
- S(g);N_GUARD,XP(G)::B(H)
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- B(i);N_GUARD::R(I),XP(h)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- P(h);
- Try
- R(I);
- Vars
- B(b);XR(C)::S(B),XB(b)
- S(g);N_GUARD,XP(G)::B(H)
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- B(i);N_GUARD::R(I),XP(h)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- Refutation
- P(h);
- Try
- R(I);
- Vars
- B(b);XR(C)::S(B),XB(b)
- S(g);N_GUARD,XP(G)::B(H)
- P(d);OGATE,XP(D)::QAR1(E),XP(d)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- P(h);SBLOCK::QAB1(E)
- Refutation
- B(i);
- Try
- Actual
- Q(E);
- Vars
- B(b);N_GUARD,XR(C)::QAR1(E),XP(d)
- S(g);N_GUARD,XP(G)::B(H)
- P(d);SBLOCK,XP(D)::S(B)
- B(i);N_GUARD::QAR2(E),XP(h)
- S(a);N_GUARD::B(H)
- S(a);N_GUARD::B(H),XS(a)
- S(g);N_GUARD::B(H)
- S(g);N_GUARD::B(H),XS(g)
- P(h);N_GUARD::QAB1(E)
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).