MESON Chess Problem Database
Problem Display
PID: 18066 (Q7/1n6/Npp1R2b/1p1k3r/4R2r/4pP1b/n1N1B1p1/6K1 w - - 0 1)
Mansfield, Comins
Chess, 1953
#2
8 + 12
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Sxe3#
- 1...Re5
- 2.R4xe5#
- 1...Rg5
- 2.Sxe3#
- 1...Bf5
- 2.R4e5#
- 1...Bg5
- 2.R4e5#
- 1...Bg7
- 2.Sxe3#
- 1...Bf8
- 2.Sxe3#
- 1...Sc1
- 2.Scb4#
- 1...Sc3
- 2.Scb4#
- 1...Sb4
- 2.Scxb4#
- 1...Sa5
- 2.Qd8#
- 1...Sc5
- 2.Sc7#
- 2.Qxc6#
- 1...Sd8
- 2.Qxd8#
- 1...b4
- 2.Bc4#
- 1...c5
- 2.Sc7#
- 2.Qxb7#
- 1...Rf4
- Tries
- 1.Sab4+?
- 1...Kc5
- 2.Rxc6#
- 1...Sxb4!
- 1...Kc5
- 1.Qxb7?
- threat
- 2.Qxc6#
- 2.Qd7#
- 1...Bf4
- 2.Qxc6#
- 1...Bf8
- 2.Sxe3#
- 2.Qxc6#
- 1...Sb4
- 2.Scxb4#
- 2.Qd7#
- 1...Bxe6!
- threat
- 1.Qc8?
- threat
- 2.Qxc6#
- 1...Bxe6
- 2.Qxe6#
- 1...Sb4
- 2.Scxb4#
- 1...Sa5
- 2.Qd7#
- 2.Qd8#
- 1...Sd8
- 2.Qd7#
- 2.Qxd8#
- 1...c5
- 2.Sc7#
- 2.Qxb7#
- 2.Qc6#
- 1...Sd6!
- threat
- 1.Qd8+?
- 1...Sd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Sxd8!
- 1...Sd6
- 1.Qe8?
- threat
- 2.Qxc6#
- 1...Bxe6
- 2.Qxe6#
- 1...Sb4
- 2.Scxb4#
- 1...Sa5
- 2.Qd7#
- 2.Qd8#
- 1...Sd8
- 2.Qd7#
- 2.Qxd8#
- 1...c5
- 2.Sc7#
- 2.Qc6#
- 1...Sd6!
- threat
- 1.Qf8?
- threat
- 2.Sc7#
- 1...Bxf8
- 2.Sxe3#
- 1...Sd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Bf4!
- threat
- 1.Qh8?
- threat
- 2.Qd4#
- 1...Re5
- 2.R4xe5#
- 2.Qxe5#
- 1...Bg7
- 2.Sxe3#
- 1...c5
- 2.Sc7#
- 1...Rxe4!
- threat
- 1.f4?
- threat
- 2.Sxe3#
- 1...Bxe6
- 2.Rd4#
- 1...Re5
- 2.R4xe5#
- 1...Bxf4!
- threat
- 1.Sab4+?
- Keys
- 1.Qg8!
- 1...Rxe4
- 2.fxe4#
- 1...Bxe6
- 2.Qxe6#
- 1...Sd6
- 2.R6e5#
- 1...Rf4
- 2.Sxe3#
- 1...Rg4
- 2.Rg6#
- 1...Re5
- 2.R4xe5#
- 1...Rf5
- 2.Rf6#
- 1...Rg5
- 2.Sxe3#
- 1...Bg4
- 2.Rd4#
- 1...Bf5
- 2.R4e5#
- 1...Bf4
- 2.Rd4#
- 1...Bg5
- 2.R4e5#
- 1...Bg7
- 2.Sxe3#
- 1...Bf8
- 2.Sxe3#
- 1...Sc1
- 2.Scb4#
- 1...Sc3
- 2.Scb4#
- 1...Sb4
- 2.Scxb4#
- 1...Sa5
- 2.Qd8#
- 1...Sc5
- 2.Sc7#
- 1...Sd8
- 2.Qxd8#
- 1...b4
- 2.Bc4#
- 1...c5
- 2.Sc7#
- 1...Rxe4
- 1.Qg8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- R(e);S_CUTB(k)::S(B),XP(c)
- R(h);N_GUARD::R1(E),XR(h)
- R(h);S_CUTB(k)::S(B),XP(c)
- B(d);S_CUTR(h)::R1(E)
- B(k);S_CUTR(h)::R1(E)
- B(k);N_GUARD::S(B),XP(c)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(l);N_GUARD,P_SPINP(j)::QAR(H)
- S(l);N_GUARD,P_SPINP(j)::QAR(H),XS(l)
- P(f);N_GUARD::B(C)
- Tries
- Try
- S(F);CHECK
- Vars
- K(g);P-FLIGHT::R1(G),XP(j)
- Refutation
- S(a);XS(F)
- Try
- Q(H);P_PINP(j),XS(l)
- Threat
- DUALS(2)
- Vars
- B(k);::QAB1(H),XP(j)
- Refutation
- B(d);XR(G)
- Try
- Q(H);
- Threat
- QAB1(H),XP(j)
- Vars
- B(d);OGATE,XR(G)::QAB1(H),XB(d)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- S(l);
- Try
- Q(H);CHECK
- Refutation
- S(l);XQ(H)
- Try
- Q(H);
- Threat
- QAB1(H),XP(j)
- Vars
- B(d);OGATE,XR(G)::QAB1(H),XB(d)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- S(l);
- Try
- Q(H);
- Threat
- S(F)
- Vars
- B(k);N_GUARD,XQ(H)::S(B),XP(c)
- Refutation
- B(k);
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- B(k);N_GUARD::S(B),XP(c)
- P(j);SBLOCK::S(F)
- Refutation
- R(e);XR(E)
- Try
- P(D);
- Threat
- S(B),XP(c)
- Vars
- B(d);SBLOCK,XR(G)::R1(E)
- R(h);N_GUARD::R1(E),XR(h)
- Refutation
- B(k);XP(D)
- Try
- Actual
- Q(H);
- Vars
- R(e);OGATE,XR(E)::P(D),XR(e)
- B(d);OGATE,P_SPINB(d),XR(G)::QAB1(H),XB(d)
- S(l);SBLOCK::QAB(H)+R(G),DCHECK
- R(e);S_CUTB(k)::S(B),XP(c)
- R(e);S_CUTB(d)::QAB(H)+R(G)
- R(h);N_GUARD::R1(E),XR(h)
- R(h);S_CUTB(d)::QAB(H)+R(G)
- R(h);S_CUTB(k)::S(B),XP(c)
- B(d);S_CUTR(e)::R1(E)
- B(d);S_CUTR(h)::R1(E)
- B(k);S_CUTR(e)::R1(E)
- B(k);S_CUTR(h)::R1(E)
- B(k);N_GUARD::S(B),XP(c)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(l);N_GUARD::QAR(H)
- S(l);SBLOCK::S(F)
- S(l);N_GUARD::QAR(H),XS(l)
- P(f);N_GUARD::B(C)
- P(j);SBLOCK::S(F)
Developed and maintained by Brian Stephenson.
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