MESON Chess Problem Database
Problem Display
PID: 121138 (3N4/Q7/2K1BP2/4k3/3Rr1PP/4n3/2PN1n2/2B1R3 w - - 0 1)
Baird, Edith Elina Helen (Mrs WJ)
Source?, 0000
#2
12 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kf4
- 2.Qb8#
- 2.Qc7#
- 1...Kf4
- Tries
- 1.Sf3+?
- 1...Kxf6
- 2.Qf7#
- 1...Kf4!
- 1...Kxf6
- 1.Sf7+?
- 1...Kf4
- 2.Qb8#
- 2.Qc7#
- 1...Kxe6
- 2.Rd6#
- 2.Qe7#
- 1...Kxf6!
- 1...Kf4
- 1.Bb2?
- threat
- 2.Rxe4#
- 1...Kf4
- 2.Qb8#
- 2.Qc7#
- 1...Rxd4
- 2.Qxd4#
- 1...Rxg4
- 2.Re4#
- 2.Rxg4#
- 1...Rf4
- 2.Re4#
- 2.Rd5#
- 1...Kxf6!
- threat
- 1.Rxe4+?
- 1...Kxf6
- 2.Qf7#
- 1...Sxe4!
- 1...Kxf6
- 1.Qc5+?
- 1...Kf4
- 2.Qd6#
- 1...Kxf6
- 2.Qg5#
- 1...Sd5!
- 1...Kf4
- 1.Qb8+?
- 1...Kxd4
- 2.Bb2#
- 2.Qb2#
- 1...Kxf6!
- 1...Kxd4
- 1.Qa5+?
- 1...Kxd4
- 2.Sb3#
- 2.Sf3#
- 2.Bb2#
- 2.Qa1#
- 2.Qc5#
- 1...Kf4
- 2.Qc7#
- 1...Kxf6
- 2.Qg5#
- 1...Sd5!
- 1...Kxd4
- 1.Qc7+?
- 1...Kxd4
- 2.Bb2#
- 1...Kxf6!
- 1...Kxd4
- 1.Qe7?
- 1...Kxd4
- 2.Bb2#
- 2.Qc5#
- 1...Kf4
- 2.Qd6#
- 2.Qc7#
- 1...Rxg4
- 2.Sf3#
- 1...Sfxg4
- 2.Rxe4#
- 1...Sxc2
- 2.Sf3#
- 1...Sexg4
- 2.Sf3#
- 1...Sd5
- 2.Sf3#
- 1...Rf4
- 2.Rd5#
- 1...Sfd1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Sd3
- 2.Rxe4#
- 1...Sh3
- 2.Rxe4#
- 1...Sed1
- 2.Sf3#
- 1...Sf1
- 2.Sf3#
- 1...Sg2
- 2.Sf3#
- 1...Sc4
- 2.Sf3#
- 1...Sf5
- 2.Sf3#
- 1...Rxd4!
- 1...Kxd4
- 1.Qf7?
- 1...Kxd4
- 2.Bb2#
- 1...Kf4
- 2.Qc7#
- 1...Rxg4
- 2.Sf3#
- 1...Sfxg4
- 2.Rxe4#
- 1...Sxc2
- 2.Sf3#
- 1...Sexg4
- 2.Sf3#
- 1...Sd5
- 2.Sf3#
- 1...Rf4
- 2.Rd5#
- 1...Sfd1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Sd3
- 2.Rxe4#
- 1...Sh3
- 2.Rxe4#
- 1...Sed1
- 2.Sf3#
- 1...Sf1
- 2.Sf3#
- 1...Sg2
- 2.Sf3#
- 1...Sc4
- 2.Sf3#
- 1...Sf5
- 2.Sf3#
- 1...Rxd4!
- 1...Kxd4
- 1.g5?
- 1...Kf4
- 2.Qb8#
- 2.Qc7#
- 1...Rxh4
- 2.Sf3#
- 2.Sc4#
- 2.Qc5#
- 1...Sxc2
- 2.Sf3#
- 2.Sc4#
- 1...Sd5
- 2.Sf3#
- 2.Sc4#
- 1...Rf4
- 2.Sc4#
- 2.Rd5#
- 2.Qc5#
- 1...Rg4
- 2.Sf3#
- 2.Sc4#
- 2.Qc5#
- 1...Sfd1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Sd3
- 2.Rxe4#
- 1...Sh3
- 2.Rxe4#
- 1...Sfg4
- 2.Rxe4#
- 1...Sed1
- 2.Sf3#
- 2.Sc4#
- 1...Sf1
- 2.Sf3#
- 2.Sc4#
- 1...Sg2
- 2.Sf3#
- 2.Sc4#
- 1...Sc4
- 2.Sf3#
- 2.Sxc4#
- 1...Seg4
- 2.Sf3#
- 2.Sc4#
- 1...Sf5
- 2.Sf3#
- 2.Sc4#
- 1...Rxd4!
- 1...Kf4
- 1.Sf3+?
- Keys
- 1.Qg7!
- 1...Kxd4
- 2.Bb2#
- 1...Kf4
- 2.Qc7#
- 1...Rxd4
- 2.Qg5#
- 1...Rxg4
- 2.Sf3#
- 1...Sfxg4
- 2.Rxe4#
- 1...Sxc2
- 2.Sf3#
- 1...Sexg4
- 2.Sf3#
- 1...Sd5
- 2.Sf3#
- 1...Rf4
- 2.Rd5#
- 1...Sfd1
- 2.Rxe4#
- 1...Sh1
- 2.Rxe4#
- 1...Sd3
- 2.Rxe4#
- 1...Sh3
- 2.Rxe4#
- 1...Sed1
- 2.Sf3#
- 1...Sf1
- 2.Sf3#
- 1...Sg2
- 2.Sf3#
- 1...Sc4
- 2.Sf3#
- 1...Sf5
- 2.Sf3#
- 1...Kxd4
- 1.Qg7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 18
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(D);CHECK
- Vars
- K(d);S_FLIGHT,XP(J)::QAR1(K)
- Refutation
- K(d);P_SPINR(c),P_SPINS(b),S_FLIGHT
- Try
- S(L);CHECK
- Refutation
- K(d);S_FLIGHT,XP(J)
- Try
- B(A);
- Threat
- B(A)+R(E),DCHECK,XR(c)
- Vars
- R(c);OGATE,P_SPINR(c),P_SPINS(b),XR(E)::QAB1(K),XR(c)
- Refutation
- K(d);S_FLIGHT,XP(J)
- Try
- R(E);CHECK,XR(c)
- Vars
- K(d);S_FLIGHT,XP(J)::QAR1(K)
- Refutation
- S(a);XR(E)
- Try
- Q(K);CHECK
- Vars
- K(d);P_SPINR(c),S_FLIGHT::QAB(K)
- K(d);OGATE,S_FLIGHT,XP(J)::QAB1(K)
- Refutation
- S(b);P_SPINR(c),P_SPINS(b)
- Try
- Q(K);CHECK
- Refutation
- K(d);S_FLIGHT,XP(J)
- Try
- Q(K);CHECK
- Vars
- K(d);P_SPINR(c),S_FLIGHT::QAB(K)
- K(d);OGATE,S_FLIGHT,XP(J)::QAB1(K)
- Refutation
- S(b);P_SPINR(c),P_SPINS(b)
- Try
- Q(K);CHECK
- Vars
- K(d);S_FLIGHT,XR(E)::B(A)
- Refutation
- K(d);S_FLIGHT,XP(J)
- Try
- Q(K);
- Vars
- R(c);P_SPINS(b),XP(F)::S(D)
- S(a);N_GUARD,XP(F)::R1(E),XR(c)
- S(b);P_SPINR(c),XP(C)::S(D)
- S(b);P_SPINR(c),XP(F)::S(D)
- S(b);P_SPINR(c)::S(D)
- R(c);P_SPINS(b),SBLOCK::R1(E)
- S(a);N_GUARD::R1(E),XR(c)
- Refutation
- R(c);P_SPINS(b),XR(E)
- Try
- Q(K);
- Vars
- K(d);OGATEB,S_FLIGHT,XR(E)::B(A)
- K(d);P_SPINR(c),S_FLIGHT::QAB(K)
- R(c);P_SPINS(b),XP(F)::S(D)
- S(a);N_GUARD,XP(F)::R1(E),XR(c)
- S(b);P_SPINR(c),XP(C)::S(D)
- S(b);P_SPINR(c),XP(F)::S(D)
- S(b);P_SPINR(c)::S(D)
- R(c);P_SPINS(b),SBLOCK::R1(E)
- S(a);N_GUARD::R1(E),XR(c)
- Refutation
- R(c);P_SPINS(b),XR(E)
- Try
- P(F);
- Vars
- S(a);N_GUARD::R1(E),XR(c)
- Refutation
- R(c);P_SPINS(b),XR(E)
- Try
- Actual
- Q(K);
- Vars
- K(d);OGATEB,S_FLIGHT,XR(E)::B(A)
- K(d);P_SPINR(c),S_FLIGHT::QAB(K)
- R(c);P_SPINS(b),SBLOCK,XR(E)::QAR2(K)
- R(c);P_SPINS(b),XP(F)::S(D)
- S(a);N_GUARD,XP(F)::R1(E),XR(c)
- S(b);P_SPINR(c),XP(C)::S(D)
- S(b);P_SPINR(c),XP(F)::S(D)
- S(b);P_SPINR(c)::S(D)
- R(c);P_SPINS(b),SBLOCK::R1(E)
- S(a);N_GUARD::R1(E),XR(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).