MESON Chess Problem Database

Problem Display
PID: 263103 (3K1R2/6p1/1nP5/2QpkBB1/8/8/1P6/8 w - - 0 1)

Alekseev, Yuri Mikhailovich

SuperProblem, 2020

3K1R2/6p1/1nP5/2QpkBB1/8/8/1P6/8

#2

7 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Bb1?
      • threat
        • 2.Re8#
      • 1...Ke6
        • 2.Qe7#
      • 1...Sc8!
    • 1.Bc2?
      • threat
        • 2.Re8#
      • 1...Ke6
        • 2.Qe7#
      • 1...Sc8!
    • 1.Bd3?
      • threat
        • 2.Re8#
      • 1...Ke6
        • 2.Qe7#
      • 1...Sc8!
    • 1.Bh3?
      • threat
        • 2.Re8#
      • 1...Ke4
        • 2.Qe3#
      • 1...Sc8!
    • 1.Bg4?
      • threat
        • 2.Re8#
      • 1...Ke4
        • 2.Qe3#
      • 1...Sc8!
    • 1.Be6?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kxe6
        • 2.Qe7#
      • 1...Sc8
        • 2.Qxd5#
      • 1...Sa4
        • 2.Qxd5#
      • 1...Sc4
        • 2.Qxd5#
      • 1...Sd7
        • 2.Qxd5#
      • 1...Sa8
        • 2.Qxd5#
      • 1...g6!
    • 1.Bg6?
      • threat
        • 2.Re8#
      • 1...Ke6
        • 2.Re8#
        • 2.Qe7#
      • 1...Sc8!
    • 1.Qxb6?
      • 1...Kd6
        • 2.Bf4#
      • 1...d4
        • 2.Qc5#
      • 1...g6!
    • 1.Qc1?
      • threat
        • 2.Qf4#
      • 1...Kd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Bf4#
      • 1...d4!
    • 1.Qc3+?
      • 1...Kd6
        • 2.Bf4#
        • 2.Be7#
      • 1...d4!
  • Keys
    • 1.Be4!
      • threat
        • 2.Re8#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Ke6
        • 2.Qe7#
      • 1...Sc8
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Threat
        • R(G)
      • Vars
        • K(b);N_GUARD,N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • S(c);
    • Try
      • B(C);
      • Threat
        • R(G)
      • Vars
        • K(b);N_GUARD,N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • S(c);
    • Try
      • B(C);
      • Threat
        • R(G)
      • Vars
        • K(b);N_GUARD,N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • S(c);
    • Try
      • B(C);
      • Threat
        • R(G)
      • Vars
        • K(b);N_GUARD,N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • S(c);
    • Try
      • B(C);
      • Threat
        • R(G)
      • Vars
        • K(b);N_GUARD,N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • S(c);
    • Try
      • B(C);
      • Vars
        • K(b);N_GUARD,N_SPINP(a),P-FLIGHT::QAR1(B)
        • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XB(C)::QAR1(B)
        • S(c);N_GUARD::QAR1(B),XP(a)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Threat
        • R(G)
      • Refutation
        • S(c);
    • Try
      • Q(B);N_PINP(a),XS(c)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::B(D)
        • P(a);OGATEB::QAR2(B)
      • Refutation
        • P(d);
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • QAB1(B)
      • Vars
        • K(b);N_GUARD,S_CUTP(a),S_FLIGHT::QAB1(B)
        • K(b);N_GUARD,S_FLIGHT::B(D)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK,N_PINP(a)
      • Refutation
        • P(a);P_SPINP(a)
  • Actual
    • B(C);
    • Threat
      • R(G)
    • Vars
      • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XB(C)::QAR1(B)
      • K(b);N_GUARD,N_SPINP(a),P-FLIGHT::QAR1(B)
      • S(c);N_GUARD::QAR1(B),XP(a)
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