MESON Chess Problem Database
Problem Display
PID: 173041 (6Q1/4Rp1K/7p/7P/4PkNN/2Bp2pP/q5p1/b3R3 w - - 0 1)
Navon, Emanuel
Variantim, 1991
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Bd2#
- 2.Rxf7#
- 1...Qb3
- 2.Bd2#
- 1...Qc4
- 2.Bd2#
- 1...Qd5
- 2.Bd2#
- 1...Qe6
- 2.Bd2#
- 1...Qb2
- 2.Rxf7#
- 1...Qc2
- 2.Rxf7#
- 1...Qd2
- 2.Bxd2#
- 2.Rxf7#
- 1...Qf2
- 2.Rxf7#
- 1...Qa3
- 2.Bd2#
- 2.Rxf7#
- 1...Qa4
- 2.Bd2#
- 2.Rxf7#
- 1...Qa6
- 2.Bd2#
- 1...Qa8
- 2.Bd2#
- 2.Rxf7#
- 1...Bb2
- 2.Bd2#
- 1...Qb1
- Tries
- 1.Sf2?
- threat
- 2.Sxd3#
- 2.Qg4#
- 1...Qxf2
- 2.Rxf7#
- 2.Qg4#
- 1...gxf2
- 2.Qg4#
- 1...Qb1
- 2.Bd2#
- 2.Rxf7#
- 2.Qg4#
- 1...Qc4
- 2.Bd2#
- 2.Qg4#
- 1...Qd5
- 2.Bd2#
- 2.Qg4#
- 1...Qe6
- 2.Sxd3#
- 1...Qc2
- 2.Rxf7#
- 2.Qg4#
- 1...Qd2
- 2.Bxd2#
- 2.Rxf7#
- 2.Qg4#
- 1...Qa6
- 2.Bd2#
- 2.Qg4#
- 1...d2
- 2.Sd3#
- 2.Qg4#
- 1...f5
- 2.Sxd3#
- 1...Qe2!
- threat
- 1.Se3?
- threat
- 2.Qg4#
- 1...Qe6
- 2.Sexg2#
- 1...Qe2
- 2.Sd5#
- 1...f5!
- threat
- 1.Se5?
- threat
- 2.Sxd3#
- 2.Qg4#
- 1...f5
- 2.Sxd3#
- 1...Qb1
- 2.Sxg2#
- 2.Bd2#
- 2.Rxf7#
- 2.Qg4#
- 1...Qc4
- 2.Sxg2#
- 2.Bd2#
- 2.Qg4#
- 1...Qd5
- 2.Sxg2#
- 2.Bd2#
- 2.Qg4#
- 1...Qe6
- 2.Sxg2#
- 2.Sxd3#
- 1...Qc2
- 2.Rxf7#
- 2.Qg4#
- 1...Qd2
- 2.Bxd2#
- 2.Rxf7#
- 2.Qg4#
- 1...Qa6
- 2.Sxg2#
- 2.Bd2#
- 2.Qg4#
- 1...d2
- 2.Sxg2#
- 2.Sd3#
- 2.Qg4#
- 1...Qe2!
- threat
- 1.Sf6?
- threat
- 2.Qg4#
- 1...Qe2
- 2.Sd5#
- 1...Qe6!
- threat
- 1.Sxg2+?
- 1...Qxg2
- 2.Rxf7#
- 1...Kf3!
- 1...Qxg2
- 1.Re3?
- threat
- 2.Rf3#
- 1...Qe6
- 2.Sxg2#
- 1...Qe2
- 2.Rxf7#
- 1...Qf2
- 2.Rxf7#
- 1...g1S!
- threat
- 1.Qxf7+?
- 1...Kg5
- 2.Sf3#
- 1...Qxf7+!
- 1...Kg5
- 1.Qg7?
- threat
- 2.Qe5#
- 2.Qf6#
- 2.Qxh6#
- 1...Bxc3
- 2.Qxh6#
- 1...Qd5
- 2.Bd2#
- 1...Qe6
- 2.Bd2#
- 1...Qa6
- 2.Bd2#
- 2.Qe5#
- 1...f5
- 2.Qxh6#
- 1...f6
- 2.Qxf6#
- 2.Qxh6#
- 1...Qa5!
- threat
- 1.Sf2?
- Keys
- 1.Re5!
- threat
- 2.Rf5#
- 1...Qd5
- 2.Bd2#
- 1...Qe6
- 2.Bd2#
- 1...Qe2
- 2.Qxf7#
- 1...Qa5
- 2.Qxf7#
- 1...f5
- 2.Rxf5#
- threat
- 1.Re5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(b);N_GUARD::B(B)
- Q(b);N_GUARD::R(H),XP(h)
- B(a);S_CUTQ(b)::B(B)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(e);XS(E)::QAR1(J)
- Q(b);::S(E),XP(d)
- P(h);::S(E),XP(d)
- Refutation
- Q(b);
- Try
- S(E);
- Threat
- QAR1(J)
- Vars
- Q(b);N_GUARD::S(E),XP(c)
- Q(b);N_GUARD::S(E)
- Refutation
- P(h);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(h);::S(E),XP(d)
- Refutation
- Q(b);
- Try
- S(E);
- Threat
- QAR1(J)
- Vars
- Q(b);N_GUARD::S(E)
- Refutation
- Q(b);
- Try
- S(F);CHECK,XP(c)
- Vars
- Q(b);XS(F)::R(H),XP(h)
- Refutation
- K(f);P-FLIGHT
- Try
- R(A);
- Threat
- R1(A)
- Vars
- Q(b);N_GUARD::S(F),XP(c)
- Q(b);N_GUARD::R(H),XP(h)
- Refutation
- P(c);
- Try
- Q(J);CHECK,XP(h)
- Vars
- K(f);S_FLIGHT::S(F)
- Refutation
- Q(b);CHECK,XQ(J)
- Try
- Q(J);
- Threat
- DUALS(3)
- Vars
- B(a);XB(B)::QAB(J),XP(g)
- Q(b);N_GUARD::B(B)
- P(h);::QAB(J),XP(g)
- Refutation
- Q(b);
- Try
- Actual
- R(H);
- Threat
- R1(H)
- Vars
- Q(b);N_GUARD::B(B)
- Q(b);N_GUARD::QAR(J),XP(h)
- P(h);::R1(H),XP(h)
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