MESON Chess Problem Database
Problem Display
PID: 89179 (3R1K2/5N2/1rp4p/4p2r/Rn2kpBp/7N/1pnpP3/1Q1b2B1 w - - 0 1)
Shire, David J
The Problemist, 1992
#2
9 + 13
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rf5
- 2.Bf3#
- 1...Ra6
- 2.Rxb4#
- 1...Rf5
- Tries
- 1.Sxh6?
- threat
- 2.Bf3#
- 1...Rf5+
- 2.Bxf5#
- 1...Rxh6
- 2.Sg5#
- 1...f3
- 2.Bxf3#
- 1...Bxe2!
- threat
- 1.Bxb6?
- threat
- 2.Sf2#
- 2.Rxb4#
- 1...Bxe2
- 2.Sf2#
- 1...f3
- 2.Rxb4#
- 1...c5!
- threat
- 1.Rd3?
- threat
- 2.Sf2#
- 2.Sd6#
- 1...Bxe2
- 2.Sf2#
- 1...Sd4
- 2.Rxd4#
- 1...Rf5
- 2.Sf2#
- 2.Bf3#
- 1...f3
- 2.Sd6#
- 1...c5
- 2.Sf2#
- 1...Rb8+!
- threat
- 1.Qa2?
- threat
- 2.Sd6#
- 1...Rf5
- 2.Bf3#
- 1...Se3
- 2.Sf2#
- 1...c5
- 2.Qd5#
- 1...Bxe2!
- threat
- 1.Sxh6?
- Keys
- 1.Ra3!
- threat
- 2.Sf2#
- 1...Sd3
- 2.exd3#
- 1...Sd5
- 2.Sd6#
- 1...f3
- 2.Re3#
- threat
- 1.Ra3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(j);P_PINS(G),SBLOCK::B(F)
- R(k);N_GUARD::R(E),XS(e)
- Tries
- Try
- S(G);XP(m)
- Threat
- B(F)
- Vars
- R(j);CHECK,N_GUARD::B(F),XR(j)
- R(j);N_GUARD,XS(G)::S(D)
- P(g);::B(F),XP(g)
- Refutation
- B(a);XP(C)
- Try
- B(B);XR(k)
- Threat
- DUALS(2)
- Vars
- B(a);XP(C)::S(D)
- P(g);::R(E),XS(e)
- Refutation
- P(l);
- Try
- R(H);N_PINS(c),P_PINS(e)
- Threat
- DUALS(2)
- Vars
- B(a);XP(C)::S(D)
- S(c);N_SPINS(e)::QAB(A)+R(H),DCHECK,XS(c)
- P(g);::S(G)
- P(l);::S(D)
- Refutation
- R(k);CHECK
- Try
- Q(A);N_PINS(c),P_PINS(e)
- Threat
- S(G)
- Vars
- R(j);P_PINS(G),SBLOCK::B(F)
- S(c);SBLOCK::S(D)
- P(l);N_GUARD::QAB1(A)
- Refutation
- B(a);XP(C)
- Try
- Actual
- R(E);
- Threat
- S(D)
- Vars
- S(e);N_SPINS(c),OGATE::P(C),XS(e)
- S(e);SBLOCK::S(G)
- P(g);N_GUARD::R1(E)
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