MESON Chess Problem Database
Problem Display
PID: 108344 (1b6/6n1/1B4KQ/2R4p/1N1k2nR/1P3P2/3p3N/3r4 w - - 0 1)
Gruenfeld, M
L'Echiquier, 1907
#2
9 + 7
| 15 | British Chess Magazine | 1912 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxd2#
- 1...Rb1
- 2.Qxd2#
- 1...Rc1
- 2.Qxd2#
- 1...Re1
- 2.Qxd2#
- 1...Rf1
- 2.Qxd2#
- 1...Rg1
- 2.Qxd2#
- 1...Rh1
- 2.Qxd2#
- 1...Bf4
- 2.Qxf4#
- 1...Be5
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 1...Ba7
- 2.Qf4#
- 1...Ra1
- Tries
- 1.Sf1?
- threat
- 2.Qe3#
- 1...Rxf1
- 2.Qxd2#
- 1...Re1
- 2.Qxd2#
- 1...Bf4
- 2.Qxf4#
- 1...Sf5!
- threat
- 1.Sxg4?
- threat
- 2.Se5#
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 2.Qe3#
- 1...Bg3
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 2.Qe3#
- 1...Rc1
- 2.Se5#
- 2.Rxc1#
- 2.Rc2#
- 2.Rc4#
- 2.Qxd2#
- 2.Qe3#
- 1...Re1
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 2.Qxd2#
- 1...Rg1
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 2.Qxd2#
- 2.Qe3#
- 1...Rh1
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 2.Qxd2#
- 2.Qe3#
- 1...Bh2
- 2.Sxh2#
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 2.Qe3#
- 1...Bf4
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 2.Qxf4#
- 1...Be5
- 2.Sxe5#
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 2.Qe3#
- 1...Bd6
- 2.Se5#
- 2.Rc4#
- 2.Qe3#
- 1...Ba7
- 2.Sf2#
- 2.Sh2#
- 2.Se3#
- 2.Se5#
- 2.Sf6#
- 2.Rc4#
- 2.Qe3#
- 2.Qf4#
- 2.Qxg7#
- 1...Bc7
- 2.Se5#
- 2.Rc4#
- 2.Rxc7#
- 2.Qe3#
- 1...Sf5
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 1...Se6
- 2.Rc4#
- 2.Qe3#
- 1...hxg4!
- threat
- 1.Rxg4+?
- 1...Bf4
- 2.Qxf4#
- 1...hxg4!
- 1...Bf4
- 1.Qg5?
- threat
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 1...Rc1
- 2.Rxc1#
- 2.Rc2#
- 2.Rc4#
- 2.Qxd2#
- 1...Bd6
- 2.Rc4#
- 1...Ba7
- 2.Rc4#
- 2.Qf4#
- 2.Qe5#
- 1...Bc7
- 2.Rc4#
- 2.Rxc7#
- 1...Se6
- 2.Rc4#
- 1...Sf5!
- threat
- 1.Qxg7+?
- 1...Be5
- 2.Rc1#
- 2.Rc2#
- 2.Rc4#
- 2.Rc6#
- 2.Rc7#
- 2.Rc8#
- 2.Qxe5#
- 1...Ke3!
- 1...Be5
- 1.Sf1?
- Keys
- 1.f4!
- threat
- 2.Rc4#
- 1...Se5+
- 2.fxe5#
- 1...Ke3
- 2.Re5#
- 1...Ke4
- 2.Rc4#
- 1...Bxf4
- 2.Qxf4#
- threat
- 1.f4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::QAR2(I),XP(b)
- B(g);N_GUARD,N_SPINS(d)::QAR2(I),XB(g)
- B(g);N_GUARD::QAR2(I)
- Tries
- Try
- S(A);
- Threat
- QAB1(I)
- Vars
- R(a);N_GUARD,XS(A)::QAR2(I),XP(b)
- R(a);N_GUARD::QAR2(I),XP(b)
- B(g);N_GUARD,N_SPINS(d)::QAR2(I),XB(g)
- Refutation
- S(f);
- Try
- S(A);XS(d)
- Threat
- DUALS(8)
- Refutation
- P(e);P_SPINP(e),XS(A)
- Try
- R(E);CHECK,XS(d)
- Vars
- B(g);N_GUARD,P_SPINB(g)::QAR2(I),XB(g)
- Refutation
- P(e);XR(E)
- Try
- Q(I);
- Threat
- DUALS(6)
- Vars
- B(g);::B(G)+R(F),DCHECK
- S(f);::B(G)+R(F),DCHECK
- Refutation
- S(f);
- Try
- Q(I);CHECK,XS(f)
- Refutation
- K(c);N_SPINS(d),S_FLIGHT
- Try
- Actual
- P(C);N_PINS(d)
- Threat
- B(G)+R(F),DCHECK
- Vars
- S(d);CHECK,OGATE::R(E)+P(C),XS(d)
- K(c);S_FLIGHT::B(G)+R(F),DCHECK
- K(c);P-FLIGHT::R(F)
- B(g);OGATE,XP(C)::QAR2(I),XB(g)
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