MESON Chess Problem Database
Problem Display
PID: 54402 (8/8/4R2p/p4knQ/P4prn/p1KP1R1N/B7/8 w - - 0 1)
Barrow, John Hugh
Grantham Journal, 1925
#2
8 + 8
| 5257 | Chess Problems by J H Barrow | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg2
- 2.Qg6#
- 1...Sxf3
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...Rg1
- Tries
- 1.Kc2?
- 1...Sxf3
- 2.Qg6#
- 1...Rg1
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...Rg2+!
- 1...Sxf3
- 1.Kd4?
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...Sxf3+!
- 1...Rg1
- 1.Bb3?
- 1...Sxf3
- 2.Qg6#
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...a2!
- 1...Sxf3
- 1.Bc4?
- 1...Sxf3
- 2.Qg6#
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...a2!
- 1...Sxf3
- 1.Bd5?
- 1...Sxf3
- 2.Qg6#
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...a2!
- 1...Sxf3
- 1.Rf1?
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg2
- 2.Qg6#
- 1...Sf3
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...f3!
- 1...Rg1
- 1.Rf2?
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg2
- 2.Qg6#
- 1...Sf3
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...f3!
- 1...Rg1
- 1.Rfe3?
- threat
- 2.R3e5#
- 1...Sf3
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...fxe3!
- threat
- 1.Qxg5+?
- 1...Rxg5
- 2.Rxf4#
- 1...hxg5!
- 1...Rxg5
- 1.Qxh6?
- threat
- 2.Qf6#
- 1...Se4+
- 2.dxe4#
- 1...Sxe6
- 2.Qxe6#
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg6
- 2.Qxg6#
- 1...Sh7!
- threat
- 1.d4?
- 1...Sxf3
- 2.Qg6#
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...Rg3!
- 1...Sxf3
- 1.Kc2?
- Keys
- 1.Qe8!
- threat
- 2.Qb5#
- 1...Se4+
- 2.dxe4#
- 1...Shxf3
- 2.Qg6#
- 1...Sgxf3
- 2.Qf7#
- 2.Qf8#
- 1...Sxe6
- 2.Qxe6#
- 1...Rg1
- 2.Rxf4#
- 1...Rg2
- 2.Rxf4#
- 1...Rg3
- 2.Rxf4#
- 1...Sg6
- 2.Qxg6#
- 1...Sf7
- 2.Qxf7#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD,N_SPINP(b),XR(D)::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- S(d);N_GUARD,N_SPINP(b),XR(D)::QAB1(G)
- R(c);N_GUARD::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- R(c);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- R(c);N_GUARD::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- S(d);CHECK,N_SPINP(b),XR(D)
- Try
- B(A);
- Vars
- S(d);N_GUARD,N_SPINP(b),XR(D)::QAB1(G)
- R(c);N_GUARD::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- P(a);
- Try
- B(A);
- Vars
- S(d);N_GUARD,N_SPINP(b),XR(D)::QAB1(G)
- R(c);N_GUARD::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- P(a);
- Try
- B(A);
- Vars
- S(d);N_GUARD,N_SPINP(b),XR(D)::QAB1(G)
- R(c);N_GUARD::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- P(a);
- Try
- R(D);
- Vars
- R(c);N_GUARD::R1(D),XP(b)
- R(c);N_GUARD,P_PINP(C)::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD,N_SPINP(b)::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- P(b);
- Try
- R(D);
- Vars
- R(c);N_GUARD::R1(D),XP(b)
- R(c);N_GUARD,P_PINP(C)::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD,N_SPINP(b)::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- P(b);
- Try
- R(D);N_PINP(b)
- Threat
- R1(D)
- Vars
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- P(b);XR(D)
- Try
- Q(G);CHECK,XS(g)
- Vars
- R(c);XQ(G)::R1(D),XP(b)
- Refutation
- P(h);XQ(G)
- Try
- Q(G);N_PINS(g),XP(h)
- Threat
- QAR1(G)
- Vars
- S(g);CHECK,OGATE::P(C),XS(g)
- S(g);OGATE,XR(H)::QAB1(G),XS(g)
- R(c);N_GUARD::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- S(g);
- Try
- P(C);
- Vars
- S(d);N_GUARD,N_SPINP(b),XR(D)::QAB1(G)
- R(c);N_GUARD::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G)
- S(d);N_GUARD::QAB1(G),XS(d)
- Refutation
- R(c);P_PINR(D)
- Try
- Actual
- Q(G);N_PINS(g)
- Threat
- QAR(G)
- Vars
- S(g);CHECK,OGATE::P(C),XS(g)
- S(d);N_GUARD,N_SPINP(b),XR(D)::QAB1(G)
- S(g);OGATE,XR(H)::QAB1(G),XS(g)
- R(c);N_GUARD::R1(D),XP(b)
- S(d);N_GUARD::QAB1(G),XS(d)
- S(g);N_GUARD::QAR2(G),XS(g)
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