MESON Chess Problem Database
Problem Display
PID: 125365 (5R1q/r1R1P3/1p3BN1/1p1Bp3/1pPkN3/3Pp3/4P2p/4Q2K w - - 0 1)
Petite, Efren
Source?, 1988
#2
12 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Bxe5#
- 1...Qh4
- 2.Bxe5#
- 1...Qh6
- 2.Bxe5#
- 1...Qh7
- 2.Bxe5#
- 1...Qxf8
- 2.Bxe5#
- 1...Qg8
- 2.Bxe5#
- 1...Ra1
- 2.Qxa1#
- 1...Rb7
- 2.Qa1#
- 1...Rxc7
- 2.Qa1#
- 1...b3
- 2.Qc3#
- 1...Qh3
- Tries
- 1.Bb7?
- threat
- 2.Rd7#
- 1...Rxb7
- 2.Qa1#
- 1...Qh3
- 2.Bxe5#
- 1...Qg8
- 2.Bxe5#
- 1...Qxf6!
- threat
- 1.Bf7?
- 1...Qxf8
- 2.Bxe5#
- 1...Rxc7
- 2.Qa1#
- 1...bxc4
- 2.Rxc4#
- 1...Qg7
- 2.Rd8#
- 1...Qh3
- 2.Bxe5#
- 1...Qh4
- 2.Bxe5#
- 2.Rd8#
- 1...Qh5
- 2.Rd8#
- 1...Qh6
- 2.Bxe5#
- 2.Rd8#
- 1...Qh7
- 2.Bxe5#
- 2.Rd8#
- 1...Qg8
- 2.Bxe5#
- 1...Ra1
- 2.Rd7#
- 2.Qxa1#
- 1...Ra2
- 2.Rd7#
- 1...Ra3
- 2.Rd7#
- 1...Ra4
- 2.Rd7#
- 1...Ra5
- 2.Rd7#
- 1...Ra6
- 2.Rd7#
- 1...Rb7
- 2.Qa1#
- 1...Ra8
- 2.Rd7#
- 1...b3
- 2.Qc3#
- 1...Qxf6!
- 1...Qxf8
- 1.Ba8?
- 1...Qxf8
- 2.Bxe5#
- 1...Rxc7
- 2.Qa1#
- 1...Rxa8
- 2.Rd7#
- 1...bxc4
- 2.Rxc4#
- 1...Qg7
- 2.Rd8#
- 1...Qh3
- 2.Bxe5#
- 1...Qh4
- 2.Bxe5#
- 2.Rd8#
- 1...Qh5
- 2.Rd8#
- 1...Qh6
- 2.Bxe5#
- 2.Rd8#
- 1...Qh7
- 2.Bxe5#
- 2.Rd8#
- 1...Qg8
- 2.Bxe5#
- 1...Ra1
- 2.Rd7#
- 2.Qxa1#
- 1...Ra2
- 2.Rd7#
- 1...Ra3
- 2.Rd7#
- 1...Ra4
- 2.Rd7#
- 1...Ra5
- 2.Rd7#
- 1...Ra6
- 2.Rd7#
- 1...Rb7
- 2.Qa1#
- 1...b3
- 2.Qc3#
- 1...Qxf6!
- 1...Qxf8
- 1.Bg8?
- threat
- 2.Rd8#
- 1...Qxg8
- 2.Bxe5#
- 1...Rxc7
- 2.Qa1#
- 1...Qh3
- 2.Bxe5#
- 1...Ra8
- 2.Rd7#
- 1...Qxf6!
- threat
- 1.Rxa7?
- threat
- 2.Qa1#
- 1...b3
- 2.Qc3#
- 1...bxc4!
- threat
- 1.Rd7?
- threat
- 2.Bb7#
- 1...Rxd7
- 2.Qa1#
- 1...Qh3
- 2.Bxe5#
- 1...Qg8
- 2.Bxe5#
- 1...Rb7
- 2.Bxb7#
- 2.Qa1#
- 1...Rc7
- 2.Qa1#
- 1...Qxf6!
- threat
- 1.Rd8?
- threat
- 2.Bg8#
- 1...Qxf6
- 2.Be6#
- 1...Qxd8
- 2.Bxe5#
- 1...Rxc7
- 2.Qa1#
- 1...Qh3
- 2.Be6#
- 2.Bxe5#
- 1...Qe8
- 2.Bxe5#
- 1...Qf8
- 2.Bxe5#
- 1...Qg8
- 2.Bxg8#
- 2.Bxe5#
- 1...Ra8!
- threat
- 1.Bb7?
- Keys
- 1.Be6!
- 1...Qxf6
- 2.Rd8#
- 1...Qxf8
- 2.Bxe5#
- 1...Rxc7
- 2.Qa1#
- 1...bxc4
- 2.Rxc4#
- 1...Qg7
- 2.Rd8#
- 1...Qh3
- 2.Bxe5#
- 2.Rd8#
- 1...Qh4
- 2.Bxe5#
- 2.Rd8#
- 1...Qh5
- 2.Rd8#
- 1...Qh6
- 2.Bxe5#
- 2.Rd8#
- 1...Qh7
- 2.Bxe5#
- 2.Rd8#
- 1...Qg8
- 2.Bxe5#
- 1...Ra1
- 2.Rd7#
- 2.Qxa1#
- 1...Ra2
- 2.Rd7#
- 1...Ra3
- 2.Rd7#
- 1...Ra4
- 2.Rd7#
- 1...Ra5
- 2.Rd7#
- 1...Ra6
- 2.Rd7#
- 1...Rb7
- 2.Qa1#
- 1...Ra8
- 2.Rd7#
- 1...b3
- 2.Qc3#
- 1...Qxf6
- 1.Be6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 5
- Sets
- Q(i);N_GUARD::B(H),XP(f)
- Q(i);N_GUARD,XR(L)::B(H),XP(f)
- R(h);N_GUARD,P_PINQ(A)::QAB(A),XR(h)
- R(h);N_GUARD::QAB(A)
- R(h);N_GUARD,XR(J)::QAB(A)
- P(c);N_GUARD::QAB1(A)
- Tries
- Try
- B(G);
- Threat
- R(J)
- Vars
- R(h);N_GUARD,XB(G)::QAB(A)
- Q(i);N_GUARD::B(H),XP(f)
- Refutation
- Q(i);N_SPINP(f),XB(H)
- Try
- B(G);
- Vars
- Q(i);N_GUARD,XR(L)::B(H),XP(f)
- R(h);N_GUARD,XR(J)::QAB(A)
- P(e);OGATE,XP(E)::R1(J),XP(e)
- Q(i);N_GUARD::R(L)
- Q(i);N_GUARD::B(H),XP(f)
- R(h);N_GUARD::R(J)
- R(h);N_GUARD::QAB(A)
- P(c);N_GUARD::QAB1(A)
- Refutation
- Q(i);N_SPINP(f),XB(H)
- Try
- B(G);
- Vars
- Q(i);N_GUARD,XR(L)::B(H),XP(f)
- R(h);N_GUARD,XR(J)::QAB(A)
- R(h);N_GUARD,XB(G)::R(J)
- P(e);OGATE,XP(E)::R1(J),XP(e)
- Q(i);N_GUARD::R(L)
- Q(i);N_GUARD::B(H),XP(f)
- R(h);N_GUARD::R(J)
- R(h);N_GUARD::QAB(A)
- P(c);N_GUARD::QAB1(A)
- Refutation
- Q(i);N_SPINP(f),XB(H)
- Try
- B(G);
- Threat
- R(L)
- Vars
- Q(i);N_GUARD,XB(G)::B(H),XP(f)
- R(h);N_GUARD,XR(J)::QAB(A)
- Q(i);N_GUARD::B(H),XP(f)
- R(h);N_GUARD::R(J)
- Refutation
- Q(i);N_SPINP(f),XB(H)
- Try
- R(J);XR(h)
- Threat
- QAB(A)
- Vars
- P(c);N_GUARD::QAB1(A)
- Refutation
- P(e);XP(E)
- Try
- R(J);
- Threat
- R(J)+B(G)
- Vars
- R(h);N_GUARD,XR(J)::QAB(A)
- Q(i);N_GUARD::B(H),XP(f)
- R(h);N_GUARD::QAB(A)
- Refutation
- Q(i);N_SPINP(f),XB(H)
- Try
- R(L);
- Threat
- R(L)+B(G)
- Vars
- Q(i);N_GUARD,N_SPINP(f),XB(H)::R(L)+B(G)
- Q(i);N_GUARD,XR(L)::B(H),XP(f)
- R(h);N_GUARD,XR(J)::QAB(A)
- Q(i);N_GUARD::B(H),XP(f)
- Refutation
- R(h);
- Try
- Actual
- B(G);
- Vars
- Q(i);N_GUARD,N_SPINP(f),XB(H)::R(L)
- Q(i);N_GUARD,XR(L)::B(H),XP(f)
- R(h);N_GUARD,XR(J)::QAB(A)
- P(e);OGATE,XP(E)::R1(J),XP(e)
- Q(i);N_GUARD::R(L)
- Q(i);N_GUARD::B(H),XP(f)
- R(h);N_GUARD::R(J)
- R(h);N_GUARD::QAB(A)
- P(c);N_GUARD::QAB1(A)
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).