MESON Chess Problem Database
Problem Display
PID: 232831 (8/5K2/1p3p1B/3pkB1n/1Q4p1/6r1/4PR1N/2N1nR2 w - - 0 1)
Ellerman, Arnoldo
Il Due Mosse, 1952
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Sxg4#
- 1...Rb3
- 2.Sxg4#
- 1...Rc3
- 2.Sxg4#
- 1...Rd3
- 2.Sxg4#
- 1...Re3
- 2.Sxg4#
- 1...Rh3
- 2.Sxg4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg7
- 2.Qf4#
- 1...Ra3
- Tries
- 1.Sd3+?
- 1...Rxd3
- 2.Sxg4#
- 1...Sxd3!
- 1...Rxd3
- 1.Bb1?
- threat
- 2.Rf5#
- 1...Rf3
- 2.Sxg4#
- 1...Sf4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg7
- 2.Bf4#
- 2.Qf4#
- 1...f5
- 2.Rxf5#
- 1...Sf3!
- threat
- 1.Bc2?
- threat
- 2.Rf5#
- 1...Rf3
- 2.Sxg4#
- 1...Sf4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg7
- 2.Bf4#
- 2.Qf4#
- 1...f5
- 2.Rxf5#
- 1...Sf3!
- threat
- 1.Bd3?
- threat
- 2.Rf5#
- 1...Rf3
- 2.Sxg4#
- 1...Sf4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg7
- 2.Bf4#
- 2.Qf4#
- 1...f5
- 2.Rxf5#
- 1...Sf3!
- threat
- 1.Be6?
- threat
- 2.Rf5#
- 1...Sf3
- 2.Sd3#
- 1...Rf3
- 2.Sxg4#
- 1...Sf4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg7
- 2.Bf4#
- 2.Qf4#
- 1...f5
- 2.Rxf5#
- 1...d4!
- threat
- 1.Bg6?
- threat
- 2.Rf5#
- 1...Sf3
- 2.Sd3#
- 1...Rf3
- 2.Sxg4#
- 1...Sf4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg7
- 2.Bf4#
- 2.Qf4#
- 1...f5
- 2.Rxf5#
- 1...d4!
- threat
- 1.Bd7?
- threat
- 2.Rf5#
- 1...Sf3
- 2.Sd3#
- 1...Rf3
- 2.Sxg4#
- 1...Sf4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg7
- 2.Bf4#
- 2.Qf4#
- 1...f5
- 2.Rxf5#
- 1...d4!
- threat
- 1.Bh7?
- threat
- 2.Rf5#
- 1...Sf3
- 2.Sd3#
- 1...Rf3
- 2.Sxg4#
- 1...Sf4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg7
- 2.Bf4#
- 2.Qf4#
- 1...f5
- 2.Rxf5#
- 1...d4!
- threat
- 1.Bc8?
- threat
- 2.Rf5#
- 1...Sf3
- 2.Sd3#
- 1...Rf3
- 2.Sxg4#
- 1...Sf4
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg7
- 2.Bf4#
- 2.Qf4#
- 1...f5
- 2.Rxf5#
- 1...d4!
- threat
- 1.Bf4+?
- 1...Sxf4
- 2.Qxf4#
- 1...Kxf5!
- 1...Sxf4
- 1.Rf4?
- threat
- 2.Qe7#
- 1...Sxf4
- 2.Qxf4#
- 1...d4
- 2.Qxd4#
- 1...Sg7!
- threat
- 1.Sd3+?
- Keys
- 1.Be4!
- threat
- 2.Rf5#
- 1...d4
- 2.Qe7#
- 1...Sf3
- 2.Sd3#
- 1...Rf3
- 2.Sxg4#
- 1...Sf4
- 2.Bxf4#
- 1...Sg7
- 2.Bf4#
- 1...f5
- 2.Rxf5#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- R(b);N_GUARD::S(E),XP(c)
- S(f);N_GUARD::QAB1(F),XS(f)
- S(f);N_GUARD::QAB1(F)
- Tries
- Try
- S(A);CHECK
- Vars
- R(b);XS(A)::S(E),XP(c)
- Refutation
- S(a);XS(A)
- Try
- B(G);
- Threat
- R1(D)
- Vars
- R(b);N_GUARD::S(E),XP(c)
- P(h);::R1(D),XP(h)
- Refutation
- S(a);
- Try
- B(G);
- Threat
- R1(D)
- Vars
- R(b);N_GUARD::S(E),XP(c)
- P(h);::R1(D),XP(h)
- Refutation
- S(a);
- Try
- B(G);
- Threat
- R1(D)
- Vars
- R(b);N_GUARD::S(E),XP(c)
- P(h);::R1(D),XP(h)
- Refutation
- S(a);
- Try
- B(G);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD,S_CUTR(b)::S(A)
- R(b);N_GUARD::S(E),XP(c)
- P(h);::R1(D),XP(h)
- Refutation
- P(d);
- Try
- B(G);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD,S_CUTR(b)::S(A)
- R(b);N_GUARD::S(E),XP(c)
- P(h);::R1(D),XP(h)
- Refutation
- P(d);
- Try
- B(G);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD,S_CUTR(b)::S(A)
- R(b);N_GUARD::S(E),XP(c)
- P(h);::R1(D),XP(h)
- Refutation
- P(d);
- Try
- B(G);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD,S_CUTR(b)::S(A)
- R(b);N_GUARD::S(E),XP(c)
- P(h);::R1(D),XP(h)
- Refutation
- P(d);
- Try
- B(G);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD,S_CUTR(b)::S(A)
- R(b);N_GUARD::S(E),XP(c)
- P(h);::R1(D),XP(h)
- Refutation
- P(d);
- Try
- B(H);CHECK
- Vars
- S(f);OGATE,XB(H)::QAB1(F),XS(f)
- Refutation
- K(e);P-FLIGHT,XB(G)
- Try
- R(D);
- Threat
- QAR2(F)
- Vars
- S(f);OGATE,XR(D)::QAB1(F),XS(f)
- P(d);::QAB1(F),XP(d)
- Refutation
- S(f);
- Try
- Actual
- B(G);
- Threat
- R1(D)
- Vars
- P(d);SBLOCK::QAR2(F)
- S(a);N_GUARD,S_CUTR(b)::S(A)
- R(b);N_GUARD::S(E),XP(c)
- S(f);N_GUARD::B(H),XS(f)
- S(f);N_GUARD::B(H)
- P(h);::R1(D),XP(h)
Developed and maintained by Brian Stephenson.
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