MESON Chess Problem Database

Problem Display
PID: 141657 (1B6/K2p3B/b3pp1q/1p4bR/1N1k3r/2R2PP1/4p1P1/4Q3 w - - 0 1)

Navon, Emanuel

StrateGems, 2011

1B6/K2p3B/b3pp1q/1p4bR/1N1k3r/2R2PP1/4p1P1/4Q3

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Qd2#
    • 1...Bc1
      • 2.Sc2#
    • 1...Be3
      • 2.Sc2#
    • 1...Bf4
      • 2.Sc2#
    • 1...d5
      • 2.Sc2#
      • 2.Sc6#
  • Tries
    • 1.Rc2?
      • threat
        • 2.Qc3#
      • 1...Ke3
        • 2.Qg1#
      • 1...Bd2!
    • 1.Rd3+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kc5!
    • 1.Rc5?
      • threat
        • 2.Qc3#
      • 1...Ke3
        • 2.Sc2#
      • 1...Bd2
        • 2.Sc2#
      • 1...Kxc5!
    • 1.Rc6?
      • threat
        • 2.Qc3#
      • 1...Ke3
        • 2.Sc2#
      • 1...Bd2
        • 2.Sc2#
      • 1...dxc6!
    • 1.Rc8?
      • threat
        • 2.Qc3#
      • 1...Ke3
        • 2.Sc2#
      • 1...Bd2
        • 2.Sc2#
      • 1...Bxc8!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Qc3#
      • 1...Ke3
        • 2.Sc2#
      • 1...Ke5
        • 2.Rxd7#
      • 1...Bd2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(c);S_CUTB(e)::QAR2(A)
    • B(e);::S(F)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB(A)
      • Refutation
        • B(e);
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P_SPINB(e),S_FLIGHT
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::S(F)
        • B(e);::S(F)
      • Refutation
        • K(b);P_SPINB(e),S_FLIGHT,XR(C)
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::S(F)
        • B(e);::S(F)
      • Refutation
        • P(j);XR(C)
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::S(F)
        • B(e);::S(F)
      • Refutation
        • B(f);XR(C)
  • Actual
    • R(C);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::S(F)
      • K(b);P_SPINB(e),P_SPINP(a),S_FLIGHT::B(J)+R(C),XP(j)
      • B(e);::S(F)
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