MESON Chess Problem Database
Problem Display
PID: 97514 (R7/2PnpnP1/2RPkP2/3pN2Q/8/3N3b/K7/3B4 w - - 0 1)
de Blasio, Francis JC
4th Comm., Problem (Zagreb), 1953
#2
11 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kxf6
- 2.Qg6#
- 1...Bf5
- 2.Qxf7#
- 1...Sxf6
- 2.Sf4#
- 2.Sc5#
- 1...Sh6
- 2.dxe7#
- 1...Sh8
- 2.dxe7#
- 1...exf6
- 2.Sf4#
- 2.Re8#
- 1...Kxf6
- Tries
- 1.Sxd7?
- threat
- 2.S3c5#
- 2.Qxh3#
- 1...Kxd7
- 2.c8Q#
- 1...Sxd6
- 2.S3c5#
- 1...exf6
- 2.S3c5#
- 2.S7c5#
- 2.Sf8#
- 1...Bf1
- 2.S3c5#
- 2.Bg4#
- 2.Qg4#
- 1...Bg2
- 2.S3c5#
- 2.Bg4#
- 2.Qg4#
- 1...Bg4
- 2.S3c5#
- 2.Bxg4#
- 2.Qxg4#
- 1...Bf5
- 2.S3c5#
- 1...Se5
- 2.S3c5#
- 1...Sh6
- 2.S3c5#
- 1...Sd8
- 2.S3c5#
- 1...Sh8
- 2.S3c5#
- 1...d4
- 2.S3c5#
- 1...Sg5!
- threat
- 1.Bg4+?
- 1...Kxf6
- 2.Qg6#
- 1...Bxg4!
- 1...Kxf6
- 1.Qg4+?
- 1...Kxf6
- 2.Sxd7#
- 2.Qg6#
- 2.g8S#
- 1...Bxg4!
- 1...Kxf6
- 1.g8Q?
- threat
- 2.Qgxf7#
- 2.dxe7#
- 1...Kxf6
- 2.Qhg6#
- 2.Qhxf7#
- 2.Qgxf7#
- 2.Qgg6#
- 1...Sxf6
- 2.Sf4#
- 2.Sc5#
- 2.Qgxf7#
- 2.d7#
- 1...exd6
- 2.Qgxf7#
- 1...exf6
- 2.Sf4#
- 2.Re8#
- 2.Qgxf7#
- 2.Qe8#
- 1...d4
- 2.Qgxf7#
- 1...Sb8
- 2.Qgxf7#
- 1...Sxe5!
- threat
- 1.g8S?
- threat
- 2.Sf4#
- 2.Qxh3#
- 1...Sdxe5
- 2.Sc5#
- 1...Sxf6
- 2.Sf4#
- 2.Sc5#
- 1...Sfxe5
- 2.Sf4#
- 1...exf6
- 2.Sf4#
- 2.Re8#
- 1...d4
- 2.Sf4#
- 2.Bb3#
- 1...Bf1
- 2.Sf4#
- 2.Bg4#
- 2.Qg4#
- 1...Bg2
- 2.Sf4#
- 2.Bg4#
- 2.Qg4#
- 1...Bg4
- 2.Sf4#
- 2.Bxg4#
- 2.Qxg4#
- 1...Bf5
- 2.Qxf7#
- 1...Sh6
- 2.Sf4#
- 2.dxe7#
- 1...Sg5!
- threat
- 1.Sxd7?
- Keys
- 1.Qg6!
- 1...Sdxe5
- 2.Sc5#
- 1...Sxf6
- 2.c8Q#
- 2.c8B#
- 1...Sfxe5
- 2.Sf4#
- 1...Sxd6
- 2.g8Q#
- 2.g8B#
- 1...exd6
- 2.Re8#
- 1...exf6
- 2.Re8#
- 1...d4
- 2.Bb3#
- 1...Bf1
- 2.Bg4#
- 1...Bg2
- 2.Bg4#
- 1...Bg4
- 2.Bxg4#
- 1...Bf5
- 2.Qxf7#
- 1...Sc5
- 2.fxe7#
- 1...Sb6
- 2.fxe7#
- 1...Sb8
- 2.fxe7#
- 1...Sf8
- 2.gxf8S#
- 1...Sg5
- 2.dxe7#
- 1...Sh6
- 2.dxe7#
- 1...Sd8
- 2.cxd8S#
- 1...Sh8
- 2.dxe7#
- 1...Sdxe5
- 1.Qg6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 14
- REMOVED MATES = 1
- Sets
- K(c);OGATEB,P-FLIGHT,XP(H)::QAR1(E)
- B(a);SBLOCK::QAB1(E),XS(f)
- S(f);N_GUARD::R(F)+P(G),XP(e)
- Tries
- Try
- S(D);XS(d)
- Threat
- DUALS(2)
- Vars
- K(c);S_FLIGHT,XS(D)::P=Q
- S(f);P_SPINS(f),XP(G)::S(C)
- B(a);::S(C)
- S(f);::S(C)
- P(b);::S(C)
- Refutation
- S(f);
- Try
- B(A);CHECK
- Vars
- K(c);P-FLIGHT,XP(H)::QAR1(E)
- Refutation
- B(a);XB(A)
- Try
- Q(E);CHECK
- Refutation
- B(a);XQ(E)
- Try
- P(J);P_PINS(f)
- Threat
- DUALS(2)
- Vars
- P(e);P_SPINP(e),XP(G)::QAB1(J),XS(f)
- P(b);::QAB1(J),XS(f)
- S(d);::QAB1(J),XS(f)
- Refutation
- S(d);XS(D)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,XS(D)::S(C)
- S(f);XS(D)::S(C)
- B(a);SBLOCK::QAB1(E),XS(f)
- Refutation
- S(f);
- Try
- Actual
- Q(E);
- Vars
- S(d);N_GUARD,SBLOCK,XS(D)::S(C)
- S(d);P_SPINS(d),XP(H)::P=Q
- S(f);SBLOCK,XS(D)::S(C)
- S(f);P_SPINS(f),XP(G)::P=Q
- P(e);OGATEB,P_SPINP(e),XP(G)::R(K)
- P(e);OGATEB,P_SPINP(e),XP(H)::R(K)
- P(b);OGATEB::B(A)
- B(a);N_GUARD::B(A)
- B(a);N_GUARD::B(A),XB(a)
- B(a);SBLOCK::QAB1(E),XS(f)
- S(d);N_GUARD::QAR(E)+P(H),XP(e)
- S(d);OGATE::PXS(d)=S
- S(f);N_GUARD::R(F)+P(G),XP(e)
- S(f);OGATE::PXS(f)=S
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).