MESON Chess Problem Database
Problem Display
PID: 273433 (2Q1KB2/P1Pp1p2/2k1b1NR/r4R2/1b1p4/1N6/4B3/6q1 w - - 0 1)
Hersom, Donald H
British Chess Magazine, 1934
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Bxb3
- 2.Se7#
- 1...Bc4
- 2.Se7#
- 1...Bd5
- 2.Se5#
- 2.Se7#
- 1...Bxf5
- 2.Se7#
- 1...Bxb3
- Tries
- 1.Sxd4+?
- 1...Kb6
- 2.Qb8#
- 1...Qxd4!
- 1...Kb6
- 1.Sxa5+?
- 1...Kb6
- 2.Qb7#
- 2.Qb8#
- 1...Bxa5!
- 1...Kb6
- 1.Se5+?
- 1...Kd5
- 2.Bf3#
- 2.Qb7#
- 2.Qa8#
- 1...Kb6
- 2.Qb8#
- 1...Rxe5!
- 1...Kd5
- 1.Se7+?
- 1...Kb6
- 2.Qb8#
- 1...Kd6
- 2.Qxd7#
- 1...Bxe7!
- 1...Kb6
- 1.Bb5+?
- 1...Kb6
- 2.Qb8#
- 1...Rxb5!
- 1...Kb6
- 1.a8Q+?
- 1...Kb6
- 2.Qab7#
- 2.Qcb7#
- 2.Qcb8#
- 1...Rxa8!
- 1...Kb6
- 1.a8B+?
- 1...Kb6
- 2.Qb7#
- 2.Qb8#
- 1...Rxa8!
- 1...Kb6
- 1.Sxd4+?
- Keys
- 1.Qb8!
- threat
- 2.c8Q#
- 2.c8R#
- 1...Qxg6
- 2.Sxd4#
- 2.c8Q#
- 2.c8R#
- 1...Rxf5
- 2.a8Q#
- 2.a8B#
- 1...Rxa7
- 2.Bb5#
- 1...Bxf8
- 2.c8Q#
- 2.c8R#
- 1...Bxb3
- 2.Se7#
- 2.c8Q#
- 2.c8R#
- 1...Bxf5
- 2.Se7#
- 1...fxg6
- 2.c8Q#
- 2.c8R#
- 1...Re5
- 2.a8Q#
- 2.a8B#
- 1...Be7
- 2.c8Q#
- 2.c8R#
- 1...Qf2
- 2.c8Q#
- 2.c8R#
- 1...Qh2
- 2.Sxd4#
- 1...Qe3
- 2.c8Q#
- 2.c8R#
- 1...Qa1
- 2.c8Q#
- 2.c8R#
- 1...Qb1
- 2.Sxd4#
- 2.c8Q#
- 2.c8R#
- 1...Qc1
- 2.Sxd4#
- 2.c8Q#
- 2.c8R#
- 1...Qd1
- 2.c8Q#
- 2.c8R#
- 1...Qe1
- 2.Sxd4#
- 2.c8Q#
- 2.c8R#
- 1...Qf1
- 2.Sxd4#
- 2.c8Q#
- 2.c8R#
- 1...Qh1
- 2.Sxd4#
- 2.c8Q#
- 2.c8R#
- 1...Qg2
- 2.Sxd4#
- 2.c8Q#
- 2.c8R#
- 1...Qg3
- 2.Sxd4#
- 1...Qg4
- 2.c8Q#
- 2.c8R#
- 1...Qg5
- 2.Sxd4#
- 2.c8Q#
- 2.c8R#
- 1...Ra1
- 2.Bb5#
- 2.c8Q#
- 2.c8R#
- 1...Ra2
- 2.Bb5#
- 2.c8Q#
- 2.c8R#
- 1...Ra3
- 2.Bb5#
- 2.c8Q#
- 2.c8R#
- 1...Ra4
- 2.Bb5#
- 2.c8Q#
- 2.c8R#
- 1...Rb5
- 2.Bxb5#
- 2.c8Q#
- 2.c8R#
- 1...Rc5
- 2.a8Q#
- 2.a8B#
- 2.c8Q#
- 2.c8R#
- 1...Rd5
- 2.a8Q#
- 2.a8B#
- 2.c8Q#
- 2.c8R#
- 1...Ra6
- 2.Bb5#
- 2.c8Q#
- 2.c8R#
- 1...Be1
- 2.c8Q#
- 2.c8R#
- 1...Bd2
- 2.c8Q#
- 2.c8R#
- 1...Ba3
- 2.Sxa5#
- 2.c8Q#
- 2.c8R#
- 1...Bc3
- 2.c8Q#
- 2.c8R#
- 1...Bc5
- 2.Sxa5#
- 2.c8Q#
- 2.c8R#
- 1...Bd6
- 2.Sxa5#
- 1...Bc4
- 2.Se7#
- 2.c8Q#
- 2.c8R#
- 1...Bd5
- 2.Se5#
- 2.Se7#
- 2.c8Q#
- 2.c8R#
- 1...d3
- 2.c8Q#
- 2.c8R#
- 1...d5
- 2.Se5#
- 1...d6
- 2.Se7#
- 1...f6
- 2.c8Q#
- 2.c8R#
- threat
- 1.Qb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- B(f);XS(B)::R(E)+S(D),DCHECK
- B(f);::R(E)+S(D),DCHECK
- B(f);XR(C)::R(E)+S(D),DCHECK
- Tries
- Try
- S(B);CHECK,XP(c)
- Vars
- K(e);P-FLIGHT,S_CUTQ(a)::QAR2(H)
- Refutation
- Q(a);XS(B)
- Try
- S(B);CHECK,XR(d)
- Refutation
- B(b);XS(B)
- Try
- S(D);CHECK,P_PINB(f)
- Vars
- K(e);N_GUARD,P-FLIGHT,S_CUTR(d)::QAR2(H)
- Refutation
- R(d);XS(D)
- Try
- S(D);CHECK,P_PINB(f)
- Vars
- K(e);N_GUARD,P-FLIGHT,S_CUTB(b)::QAR2(H)
- K(e);N_GUARD,P-FLIGHT::QAR1(H),XP(g)
- Refutation
- B(b);XS(D)
- Try
- B(A);CHECK
- Vars
- K(e);P-FLIGHT,S_CUTR(d)::QAR2(H)
- Refutation
- R(d);XB(A)
- Try
- P(F);CHECK
- Refutation
- R(d);P_PINQ(H),XQ(F)
- Try
- P(F);CHECK
- Refutation
- R(d);P_PINQ(H),XB(F)
- Try
- Actual
- Q(H);
- Threat
- P=Q
- Vars
- R(d);N_GUARD,XR(C)::P=Q
- R(d);N_GUARD,XP(F)::B(A)
- B(b);XB(J)::P=Q
- B(f);XR(C)::R(E)+S(D),DCHECK
- P(h);XS(D)::P=Q
- R(d);N_GUARD::P=Q
- B(b);::P=Q
- Q(a);::P=Q
- Q(a);N_GUARD::S(B),XP(c)
- B(b);N_GUARD::S(B),XR(d)
- P(c);::P=Q
- P(g);SBLOCK,S_CUTR(d)::S(D)
- P(g);SBLOCK,S_CUTB(b)::S(D)
- P(h);::P=Q
Developed and maintained by Brian Stephenson.
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