MESON Chess Problem Database
Problem Display
PID: 16759 (7b/2B1KN2/3RQp2/8/1q2Nk2/8/3PPP2/7b w - - 0 1)
Sheppard, Charles William
American Chess Bulletin, 1943
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Qxd2
- 2.Rxd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 1...Qxd6+
- 2.Bxd6#
- 1...Qb1
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qb2
- 2.Rd4#
- 1...Qb3
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qa4
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qc4
- 2.Rc6#
- 1...Qd4
- 2.Rxd4#
- 1...Qxe4
- 2.Rd4#
- 1...Qb5
- 2.Rd5#
- 1...Qb6
- 2.Rxb6#
- 1...Bf3
- 2.e3#
- 1...Qxd2
- Tries
- 1.Sg3?
- threat
- 2.Sh5#
- 2.Qf5#
- 1...Qxd6+
- 2.Bxd6#
- 1...f5
- 2.Qxf5#
- 1...Qa5
- 2.Rd4#
- 1...Qb1
- 2.Sh5#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qe4
- 2.Sh5#
- 2.Rd4#
- 1...Qb5
- 2.Rd4#
- 2.Rd5#
- 1...Bf3
- 2.Qf5#
- 2.e3#
- 1...Be4
- 2.Sh5#
- 1...Qc5!
- threat
- 1.Sc5?
- threat
- 2.Sd3#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qxd2
- 2.Rxd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 1...f5
- 2.Rd4#
- 1...Qa3
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qc3
- 2.Rd4#
- 1...Qa5
- 2.Sd3#
- 2.Rd4#
- 2.Rb6#
- 1...Qb1
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qb2
- 2.Sd3#
- 2.Rd4#
- 1...Qb3
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qc4
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qd4
- 2.Rxd4#
- 1...Qe4
- 2.Rd4#
- 1...Qb5
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qb6
- 2.Sd3#
- 2.Rd4#
- 2.Rxb6#
- 1...Qb7
- 2.Sd3#
- 2.Rd4#
- 1...Qb8
- 2.Sd3#
- 2.Rd4#
- 1...Be4
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Bd5
- 2.Sd3#
- 2.Rxd5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd7#
- 2.Rd8#
- 1...Bc6
- 2.Sd3#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxc6#
- 2.Rd7#
- 2.Rd8#
- 1...Qxc5!
- threat
- 1.Sxf6?
- threat
- 2.Sh5#
- 2.Qg4#
- 2.Qe5#
- 1...Qxd6+
- 2.Bxd6#
- 1...Qc3
- 2.Sh5#
- 2.Rd4#
- 2.Qg4#
- 1...Qa5
- 2.Rd4#
- 2.Qg4#
- 1...Qc5
- 2.Qg4#
- 1...Qb2
- 2.Sh5#
- 2.Rd4#
- 2.Qg4#
- 1...Qd4
- 2.Sh5#
- 2.Rxd4#
- 2.Qg4#
- 1...Qe4
- 2.Sh5#
- 2.Rd4#
- 1...Qb5
- 2.Rd4#
- 2.Rd5#
- 2.Qg4#
- 1...Bf3
- 2.Qe5#
- 2.e3#
- 1...Bxf6+!
- threat
- 1.Sg3?
- Keys
- 1.f3!
- threat
- 2.Qg4#
- 1...Qxd6+
- 2.Bxd6#
- 1...Qxd2
- 2.Rd3#
- 1...Qxe4
- 2.Rd4#
- 1...Bxf3
- 2.e3#
- 1...f5
- 2.Qh6#
- threat
- 1.f3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(E)::B(G),XQ(b)
- Q(b);N_PINR(E)::B(G)+R(E)
- Q(b);N_PINR(E)::B(G)+R(E),XQ(b)
- Q(b);N_PINR(E),P_PINQ(F),XS(D)::B(G)+R(E)
- B(a);SBLOCK::P(B)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(E)::B(G),XQ(b)
- P(d);::QAR1(F),XP(d)
- Q(b);N_PINR(E)::B(G)+R(E),DCHECK
- B(a);::S(D)
- Refutation
- Q(b);
- Try
- S(D);N_SPINR(E)
- Threat
- DUALS(9)
- Vars
- P(d);::B(G)+R(E),DCHECK
- Q(b);::B(G)+R(E),DCHECK
- Q(b);::B(G)+R(E),DCHECK,XQ(b)
- Q(b);P_PINQ(F)::B(G)+R(E)
- Refutation
- Q(b);P_PINR(E),XS(D)
- Try
- S(D);XP(d)
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(E)::B(G),XQ(b)
- Q(b);::QAR1(F)
- Refutation
- B(e);CHECK,XS(D)
- Try
- Actual
- P(C);
- Threat
- QAR1(F)
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(E)::B(G),XQ(b)
- Q(b);N_PINR(E),XP(A)::B(G)+R(E)
- Q(b);N_PINR(E),P_PINQ(F),XS(D)::B(G)+R(E)
- B(a);SBLOCK,XP(C)::P(B)
- P(d);OGATE,SBLOCK::QAB(F)
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