MESON Chess Problem Database
Problem Display
PID: 259477 (BN3R2/1r2p1PK/b2B4/Rn1k1N1Q/1p2p1P1/1P2P1P1/8/8 w - - 0 1)
Cheylan, Yves
Hannelius, Jan Ingvar
4th HM., Problemas, 1979
#2
13 + 7
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...exd6
- 2.Sd4#
- 1...e5
- 2.Qf7#
- 1...Ke6
- Tries
- 1.Kg6?
- 1...Ke6
- 2.g8Q#
- 2.g8B#
- 1...exd6
- 2.Sd4#
- 1...e5
- 2.g8Q#
- 2.g8B#
- 1...e6!
- 1...Ke6
- 1.Kh6?
- 1...Ke6
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...exd6
- 2.Sd4#
- 1...e5
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...e6!
- 1...Ke6
- 1.Kg8?
- 1...Ke6
- 2.Qf7#
- 1...exd6
- 2.Sd4#
- 1...e5
- 2.Qf7#
- 1...e6!
- 1...Ke6
- 1.Kh8?
- 1...Ke6
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...exd6
- 2.Sd4#
- 1...e5
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...e6!
- 1...Ke6
- 1.Sd4+?
- 1...e5
- 2.Qxe5#
- 1...Kxd6!
- 1...e5
- 1.Sh4+?
- 1...Ke6
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Kxd6!
- 1...Ke6
- 1.Sh6+?
- 1...Ke6
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Kxd6!
- 1...Ke6
- 1.Sxe7+?
- 1...Ke6
- 2.Qg6#
- 2.Qd5#
- 2.Qe5#
- 2.Qh6#
- 1...Kxd6!
- 1...Ke6
- 1.Bxb4?
- 1...Ke5
- 2.Sd4#
- 1...e6
- 2.Se7#
- 1...e5
- 2.Qf7#
- 1...Ke6!
- 1...Ke5
- 1.Bc7?
- 1...Kc5
- 2.Sxe7#
- 1...Ke6
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...e6
- 2.Se7#
- 1...e5!
- 1...Kc5
- 1.Bxe7?
- threat
- 2.Sd4#
- 1...Ke5
- 2.Sd4#
- 1...Ke6!
- threat
- 1.Bxb7+?
- 1...Ke6
- 2.Qg6#
- 2.Qf7#
- 2.Qh6#
- 2.g8Q#
- 2.g8B#
- 1...Bxb7!
- 1...Ke6
- 1.Rxb5+?
- 1...Ke6
- 2.Re5#
- 2.Qg6#
- 2.Qf7#
- 2.Qh6#
- 2.g8Q#
- 2.g8B#
- 1...Bxb5!
- 1...Ke6
- 1.Rf6?
- threat
- 2.Sxe7#
- 1...exd6
- 2.Sd4#
- 2.Sh4#
- 2.Sxd6#
- 2.Sh6#
- 2.Se7#
- 1...exf6
- 2.Qf7#
- 1...e5
- 2.Se7#
- 2.Qf7#
- 1...e6!
- threat
- 1.Rc8?
- 1...exd6
- 2.Sd4#
- 1...e6
- 2.Rc5#
- 1...e5
- 2.Qf7#
- 1...Ke6!
- 1...exd6
- 1.Rd8?
- 1...exd6
- 2.Sd4#
- 1...e6
- 2.Se7#
- 1...e5
- 2.Qf7#
- 1...Ke6!
- 1...exd6
- 1.Qg6?
- threat
- 2.Sxe7#
- 1...exd6
- 2.Qxd6#
- 1...e5
- 2.Se7#
- 2.Qf7#
- 1...e6!
- threat
- 1.Qe8?
- 1...Ke6
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...e6
- 2.Qc6#
- 1...e5
- 2.Qf7#
- 2.Qxe5#
- 1...exd6!
- 1...Ke6
- 1.Qh6?
- threat
- 2.Sxe7#
- 1...exd6
- 2.Qxd6#
- 1...e5
- 2.Se7#
- 1...e6!
- threat
- 1.g5?
- 1...Ke6
- 2.Qf7#
- 2.g8Q#
- 2.g8B#
- 1...e6
- 2.Qd1#
- 1...e5
- 2.Qf7#
- 1...exd6!
- 1...Ke6
- 1.g8R?
- 1...exd6+
- 2.Sg7#
- 1...e5+
- 2.Qf7#
- 1...Ke6
- 2.Qf7#
- 1...e6+!
- 1...exd6+
- 1.Kg6?
- Keys
- 1.g8S!
- 1...exd6+
- 2.Sg7#
- 1...e5+
- 2.Qf7#
- 1...e6+
- 2.Sge7#
- 1...Ke6
- 2.Qf7#
- 1...exd6+
- 1.g8S!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- P(g);N_GUARD,P_PINP(I),SBLOCK,XB(H)::QAR(G)+S(F)
- P(g);N_GUARD,P_PINP(I)::QAB(G)
- Tries
- Try
- K(J);S_FLIGHT
- Vars
- K(d);N_SPINR(f),N_SPINS(c),S_CUTP(g),S_FLIGHT::P=Q
- P(g);N_GUARD,SBLOCK,XB(H)::QAR(G)+S(F)
- P(g);N_GUARD::P=Q
- Refutation
- P(g);
- Try
- K(J);P-FLIGHT
- Vars
- P(g);N_GUARD,SBLOCK,XB(H)::QAR(G)+S(F)
- Refutation
- P(g);
- Try
- K(J);S_FLIGHT
- Vars
- K(d);N_SPINR(f),N_SPINS(c),S_CUTP(g),S_FLIGHT::QAB1(G)
- P(g);N_GUARD,SBLOCK,XB(H)::QAR(G)+S(F)
- P(g);N_GUARD::QAB(G)
- Refutation
- P(g);
- Try
- K(J);P-FLIGHT
- Vars
- P(g);N_GUARD,SBLOCK,XB(H)::QAR(G)+S(F)
- Refutation
- P(g);
- Try
- S(F);CHECK
- Vars
- P(g);P_PINP(I),P_SPINP(g)::QAR1(G),XP(g)
- Refutation
- K(d);N_SPINR(f),N_SPINS(c),P-FLIGHT,XB(H)
- Try
- S(F);CHECK
- Vars
- K(d);N_SPINR(f),N_SPINS(c),S_FLIGHT::QAR1(G)
- P(g);P_PINP(I),P_SPINP(g)::QAR1(G),XP(g)
- Refutation
- K(d);N_SPINR(f),N_SPINS(c),P-FLIGHT,XB(H)
- Try
- S(F);CHECK
- Vars
- K(d);N_SPINR(f),N_SPINS(c),S_FLIGHT::QAR1(G)
- P(g);P_PINP(I),P_SPINP(g)::QAR1(G),XP(g)
- Refutation
- K(d);N_SPINR(f),N_SPINS(c),P-FLIGHT,XB(H)
- Try
- S(F);CHECK,XP(g)
- Refutation
- K(d);N_SPINR(f),N_SPINS(c),P-FLIGHT,XB(H)
- Try
- B(H);XP(a)
- Vars
- K(d);N_SPINR(f),P-FLIGHT,S_CUTP(g)::QAR(G)+S(F)
- P(g);P_PINP(I),SBLOCK::QAR(G)+S(F),DCHECK
- P(g);N_GUARD,P_PINP(I),SBLOCK::QAB(G)
- Refutation
- K(d);N_SPINR(f),N_SPINS(c),S_FLIGHT
- Try
- B(H);
- Vars
- K(d);N_GUARD,N_SPINR(f),P-FLIGHT::QAR(G)+S(F),XP(g)
- P(g);SBLOCK::QAR(G)+S(F),DCHECK
- Refutation
- P(g);
- Try
- B(H);XP(g)
- Threat
- QAR(G)+S(F)
- Vars
- K(d);N_SPINR(f),P-FLIGHT::QAR(G)+S(F)
- Refutation
- K(d);N_SPINR(f),N_SPINS(c),S_FLIGHT
- Try
- B(K);CHECK,XR(f)
- Refutation
- B(e);XB(K)
- Try
- R(E);CHECK,XS(c)
- Refutation
- B(e);XR(E)
- Try
- R(M);
- Threat
- QAR(G)+S(F),DCHECK,XP(g)
- Vars
- P(g);N_GUARD,P_PINP(I),XR(M)::QAB(G)
- Refutation
- P(g);P_PINP(I)
- Try
- R(M);
- Vars
- P(g);N_GUARD,P_PINP(I),SBLOCK,XB(H)::QAR(G)+S(F)
- P(g);P_PINP(I),SBLOCK::R1(M)
- P(g);N_GUARD,P_PINP(I)::QAB(G)
- Refutation
- K(d);N_SPINR(f),N_SPINS(c),S_FLIGHT
- Try
- R(M);
- Vars
- P(g);N_GUARD,P_PINP(I),P_SPINP(g),XB(H)::QAR(G)+S(F)
- P(g);P_PINP(I),SBLOCK::QAR(G)+S(F),DCHECK
- P(g);N_GUARD,P_PINP(I)::QAB(G)
- Refutation
- K(d);N_SPINR(f),N_SPINS(c),S_FLIGHT
- Try
- Q(G);
- Threat
- S(F),XP(g)
- Vars
- P(g);OGATE,P_PINP(I),XB(H)::QAR1(G),XP(g)
- Refutation
- P(g);P_PINP(I)
- Try
- Q(G);
- Vars
- P(g);P_PINP(I),SBLOCK::QAB1(G)
- Refutation
- P(g);P_PINP(I),XB(H)
- Try
- Q(G);
- Threat
- S(F),XP(g)
- Vars
- P(g);OGATE,P_PINP(I),XB(H)::QAR1(G),XP(g)
- P(g);P_PINP(I)::S(F)
- Refutation
- P(g);P_PINP(I)
- Try
- P(D);
- Vars
- P(g);P_PINP(I),SBLOCK::QAR(G)
- P(g);N_GUARD,P_PINP(I)::QAB(G)
- Refutation
- P(g);P_PINP(I),XB(H)
- Try
- P(I);
- Vars
- P(g);CHECK,N_GUARD,SBLOCK,XB(H)::QAR(G)+S(F)
- P(g);CHECK,N_GUARD::QAB(G)
- K(d);N_SPINR(f),N_SPINS(c),S_CUTP(g),S_FLIGHT::QAB1(G)
- Refutation
- P(g);CHECK
- Try
- Actual
- P(I);
- Vars
- P(g);CHECK,N_GUARD,SBLOCK,XB(H)::QAR(G)+S(F)
- P(g);CHECK,N_GUARD::QAB(G)
- P(g);CHECK,SBLOCK::S(I)
- K(d);N_SPINR(f),N_SPINS(c),S_CUTP(g),S_FLIGHT::QAB1(G)
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).