MESON Chess Problem Database
Problem Display
PID: 137034 (6Q1/1N6/n1pN4/1p2pP1p/pR4nP/p1Pk2p1/PP1B2P1/3BK3 w - - 0 1)
Pereira, Alvaro
The Problemist, 2010
#2
13 + 10
SOLUTION
- SOUND
- Sets
- 1...Sf2
- 2.Qxg3#
- 1...Sf6
- 2.Qxg3#
- 1...Sh6
- 2.Qxg3#
- 1...Sxb4
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sc7
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...e4
- 2.Rd4#
- 1...c5
- 2.Qd5#
- 1...Sf2
- Tries
- 1.Se4?
- threat
- 2.Qd8#
- 1...Sxb4
- 2.Sec5#
- 2.Sbc5#
- 1...Sf6
- 2.Qxg3#
- 1...Sc5
- 2.Sexc5#
- 2.Sbxc5#
- 1...Sc7
- 2.Sec5#
- 2.Sbc5#
- 1...Sb8
- 2.Sec5#
- 2.Sbc5#
- 1...Se3!
- threat
- 1.Sxb5?
- threat
- 2.Qc4#
- 2.Qd8#
- 1...Sxb4
- 2.Sc5#
- 1...cxb5
- 2.Qd5#
- 2.Qd8#
- 1...Sf6
- 2.Qc4#
- 2.Qxg3#
- 1...Sc5
- 2.Sxc5#
- 2.Qc4#
- 1...Sc7
- 2.Sc5#
- 2.Qc4#
- 1...Sb8
- 2.Sc5#
- 2.Qc4#
- 1...Se3!
- threat
- 1.Sf7?
- threat
- 2.Qd8#
- 1...Se3
- 2.Sxe5#
- 1...Sf6
- 2.Sxe5#
- 2.Qxg3#
- 1...Sc5
- 2.Sxc5#
- 1...Sc7
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sxb4!
- threat
- 1.Sc8?
- threat
- 2.Qd8#
- 1...Sxb4
- 2.Sc5#
- 1...Sf6
- 2.Qxg3#
- 1...Sc5
- 2.Sxc5#
- 1...Sc7
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Se3!
- threat
- 1.Re4?
- 1...Se3
- 2.Rxe3#
- 1...Sf2
- 2.Re3#
- 2.Qxg3#
- 1...Sh2
- 2.Re3#
- 1...Sf6
- 2.Re3#
- 2.Qxg3#
- 1...Sh6
- 2.Re3#
- 2.Qxg3#
- 1...Sb4
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sc7
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...b4
- 2.Qc4#
- 1...c5
- 2.Qd5#
- 1...axb2!
- 1...Se3
- 1.Rxb5?
- threat
- 2.Qc4#
- 1...cxb5
- 2.Qd5#
- 1...Se3!
- threat
- 1.Qb3?
- threat
- 2.Bc2#
- 2.Be2#
- 2.Qc2#
- 1...Sxb4
- 2.Sc5#
- 2.Be2#
- 1...Se3
- 2.Be2#
- 1...axb3!
- threat
- 1.Qxg4?
- threat
- 2.Qe2#
- 2.Qf3#
- 2.Qxg3#
- 2.Qe4#
- 1...Sc5
- 2.Sxc5#
- 2.Qe2#
- 2.Qf3#
- 2.Qxg3#
- 1...e4
- 2.Rd4#
- 2.Qe2#
- 2.Qxe4#
- 1...hxg4!
- threat
- 1.Se4?
- Keys
- 1.Sc4!
- 1...Ke4
- 2.Bc2#
- 1...Sxb4
- 2.Sc5#
- 1...axb2
- 2.Sxb2#
- 1...bxc4
- 2.Qxc4#
- 1...Sf2
- 2.Sxe5#
- 1...Sh2
- 2.Sxe5#
- 1...Se3
- 2.Sxe5#
- 1...Sf6
- 2.Sxe5#
- 1...Sh6
- 2.Sxe5#
- 1...Sc5
- 2.Sxc5#
- 1...Sc7
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...e4
- 2.Qd8#
- 1...c5
- 2.Qd5#
- 1...Ke4
- 1.Sc4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- S(e);OGATE::QAR(M),XP(c)
- S(i);N_GUARD,XR(H)::S(L)
- S(i);N_GUARD::S(L),XS(i)
- S(i);N_GUARD::S(L)
- P(g);N_GUARD::R1(H)
- P(j);N_GUARD::QAR2(M)
- Tries
- Try
- S(K);
- Threat
- QAR(M)
- Vars
- S(e);OGATE::QAR(M),XP(c)
- Refutation
- S(e);
- Try
- S(K);XP(f)
- Threat
- DUALS(2)
- Vars
- S(i);N_GUARD,XR(H)::S(L)
- Refutation
- S(e);
- Try
- S(K);
- Threat
- QAR(M)
- Vars
- S(e);N_GUARD::S(K),XP(g)
- S(i);N_GUARD::S(L),XS(i)
- S(i);N_GUARD::S(L)
- Refutation
- S(i);XR(H)
- Try
- S(K);
- Threat
- QAR(M)
- Vars
- S(i);N_GUARD,XR(H)::S(L)
- S(e);OGATE::QAR(M),XP(c)
- S(i);N_GUARD::S(L),XS(i)
- S(i);N_GUARD::S(L)
- Refutation
- S(e);
- Try
- R(H);
- Vars
- S(e);N_GUARD::R1(H),XS(e)
- S(e);N_GUARD::R1(H)
- S(i);N_GUARD::S(L)
- S(i);N_GUARD::S(L),XS(i)
- P(f);N_GUARD::QAB1(M)
- P(j);N_GUARD::QAR2(M)
- Refutation
- P(a);XP(D)
- Try
- R(H);XP(f)
- Threat
- QAB1(M)
- Vars
- P(j);N_GUARD,XR(H)::QAR2(M)
- Refutation
- S(e);
- Try
- Q(M);
- Threat
- DUALS(3)
- Vars
- S(e);::B(A)
- Refutation
- P(d);XQ(M)
- Try
- Q(M);XS(e)
- Threat
- DUALS(4)
- Refutation
- P(h);XQ(M)
- Try
- Actual
- S(K);
- Vars
- K(b);S_FLIGHT::B(A)
- S(i);N_GUARD,XR(H)::S(L)
- P(a);XP(D)::S(K),XP(a)
- P(f);OGATE,XS(K)::QAB1(M),XP(f)
- S(e);N_GUARD::S(K),XP(g)
- S(i);N_GUARD::S(L),XS(i)
- S(i);N_GUARD::S(L)
- P(g);SBLOCK::QAR(M)
- P(j);N_GUARD::QAR2(M)
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