MESON Chess Problem Database
Problem Display
PID: 262465 (Kb1R1Rn1/1p2p3/1N4pN/1P2k3/Q4p2/1npp2BB/4Pr2/5r1b w - - 0 1)
Onkoud, Abdelaziz
Europe Echecs, 1993
#2
10 + 13
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rg2
- 2.Rd5#
- 1...Rf3
- 2.Rd5#
- 1...Bf3
- 2.Bxf4#
- 2.Qxf4#
- 1...Be4
- 2.Sc4#
- 1...Bd5
- 2.Rxd5#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...Sf6
- 2.Sf7#
- 1...e6
- 2.Sg4#
- 1...Rg2
- Tries
- 1.Bf5?
- threat
- 2.Sc4#
- 2.Sg4#
- 1...Sxh6
- 2.Sc4#
- 1...fxg3
- 2.Sg4#
- 1...Bf3
- 2.Sc4#
- 2.Bxf4#
- 2.Qxf4#
- 1...Bd5
- 2.Sg4#
- 2.Rxd5#
- 1...Bd6
- 2.Sg4#
- 1...Sd2
- 2.Sg4#
- 2.Qd4#
- 1...Sa5
- 2.Sg4#
- 2.Qd4#
- 1...Sf6
- 2.Sc4#
- 1...gxf5!
- threat
- 1.Bc8?
- threat
- 2.Sg4#
- 1...Sd4
- 2.Qxd4#
- 1...Bf3
- 2.Bxf4#
- 2.Qxf4#
- 1...Sf6
- 2.Sf7#
- 1...Sxh6!
- threat
- 1.Rxd3?
- threat
- 2.Sd7#
- 1...Bd5
- 2.Rxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 1...Sf6
- 2.Sf7#
- 1...Bc6!
- threat
- 1.Rxf4?
- threat
- 2.Sc4#
- 2.Sf7#
- 2.Rxf2#
- 2.Rf3#
- 1...Rxe2
- 2.Sc4#
- 2.Sf7#
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 1...Sxh6
- 2.Sc4#
- 2.Rxf2#
- 2.Rf3#
- 1...Rg1
- 2.Sc4#
- 2.Sf7#
- 1...Rg2
- 2.Sc4#
- 2.Sf7#
- 2.Rd5#
- 2.Qe4#
- 1...Rh2
- 2.Sc4#
- 2.Sf7#
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 1...Rf3
- 2.Sc4#
- 2.Sf7#
- 2.Rxf3#
- 2.Rd5#
- 2.Qe4#
- 1...Bf3
- 2.Sc4#
- 2.Sf7#
- 2.Rxf3#
- 2.Rf7#
- 2.Rff8#
- 1...Bd5
- 2.Rxf2#
- 2.Rf3#
- 2.Rxd5#
- 1...Bd6
- 2.Sf7#
- 2.Rxf2#
- 2.Rf3#
- 1...Sd2
- 2.Sf7#
- 2.Rxf2#
- 2.Rf3#
- 2.Qd4#
- 1...Sd4
- 2.Sc4#
- 2.Sf7#
- 2.Qxd4#
- 1...Sa5
- 2.Sf7#
- 2.Rxf2#
- 2.Rf3#
- 2.Qd4#
- 1...Rxf4!
- threat
- 1.Rf6?
- threat
- 2.Sg4#
- 2.Re6#
- 1...Sxf6
- 2.Sf7#
- 1...Sxh6
- 2.Re6#
- 1...exf6
- 2.Sf7#
- 1...Sd4
- 2.Qxd4#
- 1...Bf3
- 2.Re6#
- 2.Qxf4#
- 1...Bd5
- 2.Sd7#
- 2.Sg4#
- 1...Sc5
- 2.Sg4#
- 2.Qd4#
- 1...e6
- 2.Sg4#
- 2.Rxe6#
- 1...Kxf6!
- threat
- 1.Qc4?
- threat
- 2.Sg4#
- 2.Qe6#
- 1...Sxh6
- 2.Qe6#
- 1...Sd4
- 2.Qxd4#
- 1...Bf3
- 2.Bxf4#
- 2.Qe6#
- 2.Qxf4#
- 1...Bd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Bd6
- 2.Sd7#
- 2.Sg4#
- 1...Sc5
- 2.Sg4#
- 2.Qd4#
- 1...Sf6
- 2.Sf7#
- 2.Qe6#
- 1...e6
- 2.Sg4#
- 2.Qxe6#
- 1...Ra1+!
- threat
- 1.Qe4+?
- 1...Bxe4
- 2.Sc4#
- 1...Kxe4!
- 1...Bxe4
- 1.exd3?
- threat
- 2.Sc4#
- 1...Bd5
- 2.Rxd5#
- 1...Sd2
- 2.Qd4#
- 1...Sa5
- 2.Qd4#
- 1...Bd6!
- threat
- 1.Bf5?
- Keys
- 1.e4!
- threat
- 2.Rd5#
- 1...Bxe4
- 2.Sc4#
- 1...Sd4
- 2.Qxd4#
- 1...Bd6
- 2.Sd7#
- 1...Sf6
- 2.Sf7#
- 1...e6
- 2.Sg4#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(c);S_CUTB(b)::R1(I)
- B(b);SBLOCK::S(F)
- B(b);N_GUARD::R1(I),XB(b)
- S(d);N_GUARD::QAB1(D)
- S(d);N_GUARD::QAB1(D),XS(d)
- S(m);SBLOCK::S(G)
- P(k);SBLOCK::S(G)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- S(m);XS(G)::S(F)
- P(g);N_SPINP(g),XB(B)::S(G)
- B(l);::S(G)
- S(m);::S(F)
- Refutation
- P(i);XB(C)
- Try
- B(C);
- Threat
- S(G)
- Vars
- S(d);N_GUARD::QAB1(D),XS(d)
- S(m);SBLOCK::S(G)
- Refutation
- S(m);XS(G)
- Try
- R(I);XP(f)
- Threat
- S(F)
- Vars
- B(b);N_GUARD::R1(I),XB(b)
- S(d);N_GUARD::QAB1(D),XS(d)
- S(d);N_GUARD::QAB1(D)
- S(m);SBLOCK::S(G)
- Refutation
- B(b);
- Try
- R(J);XP(g)
- Threat
- DUALS(4)
- Refutation
- R(c);P_SPINR(c),XR(J)
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- S(m);SBLOCK,XR(J)::S(G)
- S(m);XS(G)::R1(J)
- P(k);SBLOCK,XR(J)::S(G)
- S(d);N_GUARD::QAB1(D),XS(d)
- Refutation
- K(h);N_SPINP(g),S_FLIGHT,XR(J)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- S(m);XS(G)::QAR1(D)
- S(d);N_GUARD::QAB1(D),XS(d)
- Refutation
- R(a);CHECK
- Try
- Q(D);CHECK
- Vars
- B(b);SBLOCK,XQ(D)::S(F)
- Refutation
- K(h);N_SPINP(g),P-FLIGHT,XQ(D)
- Try
- P(A);XP(f)
- Threat
- S(F)
- Vars
- B(b);N_GUARD::R1(I),XB(b)
- S(d);N_GUARD::QAB1(D)
- Refutation
- B(l);
- Try
- Actual
- P(A);
- Threat
- R1(I)
- Vars
- B(b);SBLOCK,XP(A)::S(F)
- S(d);N_GUARD::QAB1(D),XS(d)
- B(l);SBLOCK::S(F)
- S(m);SBLOCK::S(G)
- P(k);SBLOCK::S(G)
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