MESON Chess Problem Database
Problem Display
PID: 258366 (4Q3/7b/1P1k3r/7r/1P1N1P1b/3p2p1/B2N2P1/2B1K3 w - - 0 1)
Schwann, Edward B
English Mechanic and World of Science, 1891
(First published on Fri Nov 6 1891)
#2
10 + 7
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rb5
- 2.Sxb5#
- 1...Rd5
- 2.Sc4#
- 1...Re5+
- 2.fxe5#
- 1...Rf5
- 2.Se4#
- 1...Rg5
- 2.Qd8#
- 1...Re6+
- 2.Qxe6#
- 1...Rf6
- 2.Qd8#
- 1...Rg6
- 2.Se4#
- 1...Bg5
- 2.Sb5#
- 1...Bf6
- 2.Qe6#
- 1...Be7
- 2.Qc6#
- 1...Bd8
- 2.Qxd8#
- 1...Be4
- 2.Sxe4#
- 1...Bf5
- 2.Sb5#
- 1...Bg6
- 2.Qe6#
- 1...Bg8
- 2.Se4#
- 1...Rb5
- Tries
- 1.Sf5+?
- 1...Rxf5
- 2.Se4#
- 1...Bxf5!
- 1...Rxf5
- 1.Be6?
- threat
- 2.Sc4#
- 2.Qd7#
- 1...Rxe6+
- 2.Qxe6#
- 1...Rc5
- 2.Qd7#
- 1...Re5+!
- threat
- 1.Bf7?
- threat
- 2.Sc4#
- 1...Re5+
- 2.fxe5#
- 1...Re6+
- 2.Qxe6#
- 1...Rc5!
- threat
- 1.f5?
- threat
- 2.Se4#
- 2.Sb5#
- 1...Re6+
- 2.Qxe6#
- 1...Rxf5
- 2.Se4#
- 1...Bxf5
- 2.Sb5#
- 1...Be7!
- threat
- 1.Sf5+?
- Keys
- 1.Ba3!
- 1...Re5+
- 2.fxe5#
- 1...Re6+
- 2.Qxe6#
- 1...Ra5
- 2.bxa5#
- 1...Rb5
- 2.Sxb5#
- 1...Rc5
- 2.bxc5#
- 1...Rd5
- 2.Sc4#
- 1...Rf5
- 2.Se4#
- 1...Rg5
- 2.Qd8#
- 1...Rf6
- 2.Qd8#
- 1...Rg6
- 2.Se4#
- 1...Bg5
- 2.Sb5#
- 2.b5#
- 1...Bf6
- 2.Qe6#
- 1...Be7
- 2.Qc6#
- 1...Bd8
- 2.Qxd8#
- 1...Be4
- 2.Sxe4#
- 1...Bf5
- 2.Sb5#
- 2.b5#
- 1...Bg6
- 2.Qe6#
- 1...Bg8
- 2.Se4#
- 1...Re5+
- 1.Ba3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(d);N_GUARD::S(G),XR(d)
- R(d);SBLOCK::S(D)
- R(d);CHECK,OGATE::P(H),XR(d)
- R(d);S_CUTB(g)::S(D)
- R(d);S_CUTB(c)::QAR2(J)
- R(f);CHECK,N_GUARD::QAR1(J),XR(f)
- R(f);S_CUTB(c)::QAR2(J)
- R(f);S_CUTB(g)::S(D)
- B(c);S_CUTR(d)::S(G)
- B(c);S_CUTR(f)::QAR1(J)
- B(c);SBLOCK::QAR1(J)
- B(c);N_GUARD::QAR2(J),XB(c)
- B(g);N_GUARD::S(D),XB(g)
- B(g);S_CUTR(d)::S(G)
- B(g);S_CUTR(f)::QAR1(J)
- B(g);N_GUARD::S(D)
- Tries
- Try
- S(G);CHECK
- Vars
- R(d);XS(G)::S(D)
- Refutation
- B(g);XS(G)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,OGATE,XB(C)::QAR1(J),XR(f)
- R(d);::QAR1(J)
- Refutation
- R(d);CHECK
- Try
- B(C);
- Threat
- S(D)
- Vars
- R(d);CHECK,OGATE::P(H),XR(d)
- R(f);CHECK,N_GUARD::QAR1(J),XR(f)
- Refutation
- R(d);
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,N_GUARD::QAR1(J),XR(f)
- R(d);XP(H)::S(D)
- B(g);XP(H)::S(G)
- Refutation
- B(c);
- Try
- Actual
- B(A);
- Vars
- R(d);CHECK,OGATE::P(H),XR(d)
- R(f);CHECK,N_GUARD::QAR1(J),XR(f)
- R(d);OGATE::B(A)+P(F),XR(d)
- R(d);N_GUARD::S(G),XR(d)
- R(d);OGATE::P(F),XR(d)
- R(d);SBLOCK::S(D)
- R(d);S_CUTB(g)::S(D)
- R(d);S_CUTB(c)::QAR2(J)
- R(f);S_CUTB(c)::QAR2(J)
- R(f);S_CUTB(g)::S(D)
- B(c);S_CUTR(f)::QAR1(J)
- B(c);SBLOCK::QAR1(J)
- B(c);N_GUARD::QAR2(J),XB(c)
- B(g);N_GUARD::S(D),XB(g)
- B(g);S_CUTR(f)::QAR1(J)
- B(g);N_GUARD::S(D)
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