MESON Chess Problem Database
Problem Display
PID: 2799 (Q3qBnK/4R3/2R4p/1P1k1p1r/8/2p1rN1B/4P3/1b1N2b1 w - - 0 1)
White, Alain Campbell
Source?, 1905
#2
10 + 10
| 2794 | Terms & Themes of Chess Problems | 1907 |
| 14868 | Pirnie Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qxc6
- 2.Qxc6#
- 1...Qf7
- 2.Qd8#
- 1...Qd8
- 2.Qxd8#
- 1...Rxe2
- 2.Sxc3#
- 1...Re4
- 2.Sxc3#
- 1...Re5
- 2.Sxc3#
- 1...Re6
- 2.Sxc3#
- 1...Rxe7
- 2.Sxc3#
- 1...Ba2
- 2.Qxa2#
- 1...Bd3
- 2.Sxc3#
- 1...Be4
- 2.Qa2#
- 1...Bh2
- 2.Sxe3#
- 1...Qxc6
- Tries
- 1.Rc5+?
- 1...Kd6
- 2.Rd5#
- 2.Qd5#
- 1...Kxc5!
- 1...Kd6
- 1.Rc8+?
- 1...Qc6
- 2.Qxc6#
- 1...Kd6!
- 1...Qc6
- 1.Rxe3?
- threat
- 2.Sxc3#
- 2.Rc5#
- 1...Qe5+
- 2.Rxe5#
- 1...Qxc6
- 2.Qxc6#
- 1...Qxf8
- 2.Sxc3#
- 2.Re5#
- 1...Bxe3
- 2.Sxc3#
- 1...Qe4
- 2.Sxc3#
- 2.Qd8#
- 1...Qe7
- 2.Sxc3#
- 1...Be4
- 2.Sxc3#
- 2.Qa2#
- 1...Se7
- 2.Sxc3#
- 2.Re5#
- 1...c2
- 2.Sc3#
- 2.Rc5#
- 1...Qxe3!
- threat
- 1.Re5+?
- 1...Rxe5
- 2.Sxc3#
- 1...Qxe5+!
- 1...Rxe5
- 1.Rd7+?
- 1...Ke4
- 2.Rc4#
- 2.Rd4#
- 2.Qa4#
- 1...Qxd7!
- 1...Ke4
- 1.Rxe8?
- threat
- 2.Rxc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 2.Qd8#
- 1...Rxf3
- 2.Qd8#
- 1...Rxe8
- 2.Sxc3#
- 1...Re5
- 2.Sxc3#
- 2.Rxc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 2.Rxe5#
- 1...Re6
- 2.Sxc3#
- 2.Rc5#
- 1...Re7
- 2.Sxc3#
- 1...Bh2
- 2.Sxe3#
- 2.Rxc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 1...Sf6
- 2.Rxc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 1...c2
- 2.Rxc2#
- 2.Rc3#
- 2.Rc5#
- 2.Rc7#
- 2.Rcc8#
- 2.Qd8#
- 1...Se7!
- threat
- 1.Qa4?
- threat
- 2.Qb3#
- 2.Qc4#
- 2.Qd4#
- 1...Qxc6
- 2.Qd4#
- 1...Qxe7
- 2.Qc4#
- 2.Qd4#
- 1...Rxe2
- 2.Sxc3#
- 2.Qb3#
- 2.Qc4#
- 1...Rxf3
- 2.Qc4#
- 1...Rxe7
- 2.Sxc3#
- 2.Qc4#
- 1...Sxe7
- 2.Qc4#
- 2.Qd4#
- 1...Rd3
- 2.Qb3#
- 2.Qc4#
- 1...Re4
- 2.Sxc3#
- 1...Re5
- 2.Sxc3#
- 2.Qc4#
- 1...Re6
- 2.Sxc3#
- 2.Qc4#
- 1...Ba2
- 2.Qxa2#
- 2.Qd4#
- 1...Bc2
- 2.Qc4#
- 2.Qd4#
- 1...Bd3
- 2.Sxc3#
- 2.Qd4#
- 1...c2
- 2.Qc4#
- 2.Qd4#
- 1...Rh4!
- threat
- 1.Qd8+?
- 1...Qd7
- 2.Qxd7#
- 1...Qxd8!
- 1...Qd7
- 1.Rc5+?
- Keys
- 1.Re4!
- threat
- 2.Rd4#
- 2.Rc5#
- 1...Qe5+
- 2.Rf6#
- 1...Kxe4
- 2.Rc4#
- 1...Qxc6
- 2.Qxc6#
- 1...Qxe4
- 2.Qd8#
- 1...Qxa8
- 2.Rd4#
- 1...Qxf8
- 2.Rd4#
- 1...Rxe2
- 2.Sxc3#
- 2.Rc5#
- 1...Rxf3
- 2.Rc5#
- 1...Rxe4
- 2.Sxc3#
- 1...Bxe4
- 2.Qa2#
- 1...fxe4
- 2.Rc5#
- 1...Qe7
- 2.Rd4#
- 1...Rd3
- 2.Rc5#
- 1...Rh4
- 2.Rc5#
- 1...Se7
- 2.Rd4#
- threat
- 1.Re4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 9
- Sets
- Q(i);OGATE,P_SPINQ(i),XR(F)::QAB1(H),XQ(i)
- Q(i);N_GUARD::QAR(H)
- Q(i);N_GUARD::QAR(H),XQ(i)
- R(d);N_GUARD,XP(B)::S(A),XP(c)
- R(d);N_GUARD::S(A),XP(c)
- R(d);N_GUARD,XR(G)::S(A),XP(c)
- B(a);N_GUARD::QAB(H),XB(a)
- B(a);S_CUTR(d)::S(A),XP(c)
- B(a);N_GUARD::QAB(H)
- B(b);N_GUARD::S(A),XR(d)
- Tries
- Try
- R(F);CHECK
- Refutation
- K(e);P-FLIGHT,XR(F)
- Try
- R(F);CHECK
- Vars
- Q(i);N_GUARD,P_SPINQ(i)::QAB1(H),XQ(i)
- Refutation
- K(e);P-FLIGHT
- Try
- R(G);XR(d)
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,N_GUARD::R1(G),XQ(i)
- Q(i);OGATE,P_SPINQ(i),XR(F)::QAB1(H),XQ(i)
- B(b);XR(G)::S(A),XP(c)
- Q(i);::S(A),XP(c)
- Refutation
- Q(i);XR(G)
- Try
- R(G);CHECK
- Vars
- R(d);XR(G)::S(A),XP(c)
- Refutation
- Q(i);CHECK,XR(G)
- Try
- R(G);CHECK
- Refutation
- Q(i);XR(G)
- Try
- R(G);XQ(i)
- Threat
- DUALS(5)
- Vars
- R(d);XS(C)::QAR(H)
- R(d);N_GUARD,XR(G)::S(A),XP(c)
- R(d);N_GUARD::S(A),XP(c)
- Refutation
- S(j);
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- Q(i);XR(F)::QAR1(H)
- R(d);XS(C)::QAB1(H)
- R(d);N_GUARD::S(A),XP(c)
- Refutation
- R(g);
- Try
- Q(H);CHECK
- Vars
- Q(i);N_GUARD,P_SPINQ(i)::QAR2(H),XQ(i)
- Refutation
- Q(i);XQ(H)
- Try
- Actual
- R(G);
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,N_GUARD::QAB(H)+R(F)
- K(e);S_FLIGHT,XR(G)::QAB(H)+R(F),DCHECK
- Q(i);OGATE,P_SPINQ(i),XR(F)::QAB1(H),XQ(i)
- Q(i);N_GUARD,SBLOCK,XR(G)::QAR(H)
- Q(i);XQ(H)::R1(G)
- Q(i);XB(I)::R1(G)
- R(d);XS(C)::QAB(H)+R(F),DCHECK
- R(d);N_GUARD,XR(G)::S(A),XP(c)
- B(a);N_GUARD,SBLOCK,XR(G)::QAB(H)
- P(f);SBLOCK,XR(G)::QAB(H)+R(F),DCHECK
- Q(i);::R1(G)
- R(d);::QAB(H)+R(F),DCHECK
- R(g);::QAB(H)+R(F),DCHECK
- S(j);P_PINB(I)::R1(G)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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