MESON Chess Problem Database
Problem Display
PID: 157837 (4N1B1/8/Q1p2pNK/p1k2p2/1p3p2/1p2bR2/8/q2R2B1 w - - 0 1)
Rice, John Michael
American Chess Bulletin, 1958
#2
8 + 10
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Qxa5#
- 1...Qc3
- 2.Qxa5#
- 1...Qd4
- 2.Qxa5#
- 1...Qe5
- 2.Qxa5#
- 1...Qb1
- 2.Qxa5#
- 1...Qc1
- 2.Qxa5#
- 1...a4
- 2.Qa5#
- 1...Qb2
- Tries
- 1.Sxf4?
- 1...Bxg1
- 2.Se6#
- 1...Qb2
- 2.Qxa5#
- 1...Qc3
- 2.Qxa5#
- 1...Qd4
- 2.Qxa5#
- 1...Qe5
- 2.Qxa5#
- 1...Qb1
- 2.Bxe3#
- 2.Qxa5#
- 1...Qc1
- 2.Qxa5#
- 1...Qa2
- 2.Bxe3#
- 1...Qa3
- 2.Bxe3#
- 1...Qa4
- 2.Bxe3#
- 1...Bf2
- 2.Se6#
- 1...Bd4
- 2.Sd3#
- 1...b2
- 2.Bxe3#
- 1...a4
- 2.Qa5#
- 1...Qxd1!
- 1...Bxg1
- 1.Sf8?
- threat
- 2.Se6#
- 2.Sd7#
- 1...Qd4
- 2.Qxa5#
- 1...Qe5
- 2.Sd7#
- 2.Qxa5#
- 1...Bd4
- 2.Sd7#
- 1...Qxd1!
- threat
- 1.Sd6?
- threat
- 2.Sb7#
- 2.Qa7#
- 1...Qd4
- 2.Sb7#
- 1...Bd4
- 2.Sb7#
- 1...Qxd1!
- threat
- 1.Bxe3+?
- 1...Qd4
- 2.Bxd4#
- 2.Rc1#
- 2.Qxa5#
- 1...fxe3!
- 1...Qd4
- 1.Rxe3?
- threat
- 2.Rc3#
- 2.Re5#
- 1...Qc3
- 2.Rxc3#
- 2.Re5#
- 2.Qxa5#
- 1...Qd4
- 2.Qxa5#
- 1...Qe5
- 2.Rc3#
- 2.Rxe5#
- 2.Qxa5#
- 1...fxe3!
- threat
- 1.Sxf4?
- Keys
- 1.Rxf4!
- 1...Qxd1
- 2.Qxa5#
- 1...Bxg1
- 2.Rc4#
- 1...Qa4
- 2.Bxe3#
- 2.Rc1#
- 1...Qb2
- 2.Qxa5#
- 1...Qc3
- 2.Qxa5#
- 1...Qd4
- 2.Qxa5#
- 1...Qe5
- 2.Qxa5#
- 1...Qb1
- 2.Bxe3#
- 2.Qxa5#
- 1...Qc1
- 2.Rxc1#
- 2.Qxa5#
- 1...Qa2
- 2.Bxe3#
- 1...Qa3
- 2.Bxe3#
- 1...Bf2
- 2.Rc4#
- 1...Bd4
- 2.Rxf5#
- 1...b2
- 2.Bxe3#
- 1...a4
- 2.Qa5#
- 1...Qxd1
- 1.Rxf4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 2
- Sets
- Q(a);N_GUARD::QAR2(D),XP(f)
- Q(a);N_GUARD,N_SPINB(c)::QAR2(D),XP(f)
- P(f);S_CUTQ(a)::QAR2(D)
- Tries
- Try
- S(E);P_SPINS(E),XP(e)
- Vars
- B(c);N_PINS(E),N_SPINB(c),XB(B)::S(E)
- Q(a);N_GUARD::QAR2(D),XP(f)
- Q(a);N_GUARD,N_SPINB(c)::QAR2(D),XP(f)
- Q(a);N_GUARD::B(B),XB(c)
- B(c);N_PINS(E)::S(E)
- P(b);S_CUTQ(a)::B(B),XB(c)
- P(f);S_CUTQ(a)::QAR2(D)
- Refutation
- Q(a);XR(A)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,N_SPINB(c)::QAR2(D),XP(f)
- B(c);::S(E)
- Refutation
- Q(a);XR(A)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(a);N_SPINB(c)::S(G)
- B(c);::S(G)
- Refutation
- Q(a);XR(A)
- Try
- B(B);CHECK,XB(c)
- Refutation
- P(e);XB(B)
- Try
- R(C);XB(c)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD::QAR2(D),XP(f)
- Refutation
- P(e);P_SPINP(e),XR(C)
- Try
- Actual
- R(C);P_SPINR(C),XP(e)
- Vars
- Q(a);N_GUARD,XR(A)::QAR2(D),XP(f)
- B(c);N_PINR(C),N_SPINB(c),XB(B)::R1(C)
- Q(a);N_GUARD::QAR2(D),XP(f)
- Q(a);N_GUARD,N_SPINB(c)::QAR2(D),XP(f)
- Q(a);N_GUARD::B(B),XB(c)
- B(c);N_PINR(C)::R1(C)
- B(c);N_PINR(C)::R(C),XP(h)
- P(b);S_CUTQ(a)::B(B),XB(c)
- P(f);S_CUTQ(a)::QAR2(D)
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).