MESON Chess Problem Database
Problem Display
PID: 7559 (4r3/6B1/2p3p1/Q2Nppp1/K2k4/bP4N1/2PPp1R1/2n2R1B w - - 0 1)
le Grand, Henk
Probleemblad, 1991
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Sd3
- 2.c3#
- 1...g4
- 2.Rf4#
- 1...cxd5
- 2.Qc3#
- 1...Sd3
- Tries
- 1.Sxe2+?
- 1...Ke4
- 2.Sdc3#
- 2.Sf6#
- 2.Rgg1#
- 2.Rgf2#
- 2.Rh2#
- 2.Rg3#
- 2.Rg4#
- 2.Rxg5#
- 1...Sxe2!
- 1...Ke4
- 1.Sxf5+?
- 1...Ke4
- 2.Sc3#
- 2.Sf6#
- 2.Rgg1#
- 2.Rxe2#
- 2.Rgf2#
- 2.Rh2#
- 2.Rg3#
- 2.Rg4#
- 2.Rxg5#
- 1...gxf5!
- 1...Ke4
- 1.Se3?
- threat
- 2.Qc3#
- 1...Ra8
- 2.Bxe5#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Sa2!
- threat
- 1.Sb6?
- threat
- 2.Qc3#
- 1...Ra8
- 2.Bxe5#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Sa2!
- threat
- 1.Sf6?
- threat
- 2.Qc3#
- 1...Sa2
- 2.Sxe2#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Ra8!
- threat
- 1.Sc7?
- threat
- 2.Qc3#
- 1...Ra8
- 2.Se6#
- 2.Bxe5#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Sa2!
- threat
- 1.Se7?
- threat
- 2.Sxc6#
- 2.Bxe5#
- 2.Qc3#
- 2.Qxe5#
- 1...Bxe7
- 2.Bxe5#
- 2.Qxe5#
- 1...Sxb3
- 2.Qc3#
- 1...e1Q
- 2.Sxc6#
- 2.Qc3#
- 1...e1R
- 2.Sxc6#
- 2.Qc3#
- 1...Sa2
- 2.Sxc6#
- 2.Bxe5#
- 2.Qxe5#
- 1...Ra8
- 2.Sxc6#
- 2.Bxe5#
- 1...Rc8
- 2.Bxe5#
- 2.Qc3#
- 2.Qxe5#
- 1...Bb2
- 2.Sxc6#
- 2.Bxe5#
- 2.Qb4#
- 2.Qxe5#
- 1...Bb4
- 2.Sxc6#
- 2.Bxe5#
- 2.Qxb4#
- 2.Qxe5#
- 1...Bc5
- 2.Qc3#
- 1...Bd6
- 2.Sxc6#
- 2.Qc3#
- 1...Sd3
- 2.Sxc6#
- 2.Qc3#
- 2.c3#
- 1...c5
- 2.Qc3#
- 1...Rxe7!
- threat
- 1.Rgg1?
- threat
- 2.Qc3#
- 1...Sa2
- 2.Sxe2#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Ra8!
- threat
- 1.Rxe2?
- threat
- 2.Qc3#
- 1...Sxe2
- 2.Sxe2#
- 1...Ra8
- 2.Bxe5#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Sa2!
- threat
- 1.Rgf2?
- threat
- 2.Qc3#
- 1...Sa2
- 2.Sxe2#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Ra8!
- threat
- 1.Rh2?
- threat
- 2.Qc3#
- 1...Sa2
- 2.Sxe2#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Ra8!
- threat
- 1.Sxe2+?
- Keys
- 1.Sf4!
- threat
- 2.Qc3#
- 2.c3#
- 1...Sxb3
- 2.Qc3#
- 1...gxf4
- 2.Rxf4#
- 1...Ra8
- 2.Se6#
- 2.Bxe5#
- 2.c3#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Sa2
- 2.Sfxe2#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- S(a);SBLOCK::P(C)
- P(g);N_GUARD::R(A)
- P(h);SBLOCK,XS(J)::QAB1(I)
- Tries
- Try
- S(G);CHECK,XP(b)
- Refutation
- S(a);XS(G)
- Try
- S(G);CHECK,XP(f)
- Refutation
- P(i);XS(G)
- Try
- S(J);
- Threat
- QAB1(I)
- Vars
- R(j);N_GUARD,P_PINQ(I)::B(K),XP(e)
- B(c);N_GUARD::QAR2(I)
- B(c);N_GUARD::QAR2(I),XB(c)
- Refutation
- S(a);
- Try
- S(J);
- Threat
- QAB1(I)
- Vars
- R(j);N_GUARD,P_PINQ(I)::B(K),XP(e)
- B(c);N_GUARD::QAR2(I)
- B(c);N_GUARD::QAR2(I),XB(c)
- Refutation
- S(a);
- Try
- S(J);N_PINP(e)
- Threat
- QAB1(I)
- Vars
- S(a);N_GUARD::S(G),XP(b)
- B(c);N_GUARD::QAR2(I)
- B(c);N_GUARD::QAR2(I),XB(c)
- Refutation
- R(j);P_PINQ(I)
- Try
- S(J);
- Threat
- QAB1(I)
- Vars
- B(c);N_GUARD::QAR2(I)
- B(c);N_GUARD::QAR2(I),XB(c)
- Refutation
- S(a);
- Try
- S(J);
- Threat
- DUALS(4)
- Vars
- S(a);XP(F)::QAB1(I)
- B(c);::QAB1(I)
- P(h);::QAB1(I)
- Refutation
- R(j);XS(J)
- Try
- R(E);
- Threat
- QAB1(I)
- Vars
- S(a);N_GUARD::S(G),XP(b)
- B(c);N_GUARD::QAR2(I)
- B(c);N_GUARD::QAR2(I),XB(c)
- Refutation
- R(j);P_PINQ(I)
- Try
- R(E);XP(b)
- Threat
- QAB1(I)
- Vars
- S(a);XR(E)::S(G),XS(a)
- R(j);N_GUARD,P_PINQ(I)::B(K),XP(e)
- B(c);N_GUARD::QAR2(I)
- B(c);N_GUARD::QAR2(I),XB(c)
- Refutation
- S(a);
- Try
- R(E);
- Threat
- QAB1(I)
- Vars
- S(a);N_GUARD::S(G),XP(b)
- B(c);N_GUARD::QAR2(I)
- B(c);N_GUARD::QAR2(I),XB(c)
- Refutation
- R(j);P_PINQ(I)
- Try
- R(E);
- Threat
- QAB1(I)
- Vars
- S(a);N_GUARD::S(G),XP(b)
- B(c);N_GUARD::QAR2(I)
- B(c);N_GUARD::QAR2(I),XB(c)
- Refutation
- R(j);P_PINQ(I)
- Try
- Actual
- S(J);
- Threat
- DUALS(2)
- Vars
- S(a);XP(F)::QAB1(I)
- P(g);OGATE,XS(J)::R(A),XP(g)
- B(c);N_GUARD::QAR2(I)
- B(c);N_GUARD::QAR2(I),XB(c)
- S(a);N_GUARD::S(J),XP(b)
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