MESON Chess Problem Database

Problem Display
PID: 103474 (1Q6/5N2/5p2/1p6/1Rbk3p/7K/2PN4/4B3 w - - 0 1)

Bertrand, Emile

La Strategie, 1896

1Q6/5N2/5p2/1p6/1Rbk3p/7K/2PN4/4B3

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd6#
    • 1...Kd5
      • 2.Qd6#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Bf2+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Kc3!
    • 1.Rxc4+?
      • 1...Ke3
        • 2.Re4#
        • 2.Qe8#
      • 1...Kd5
        • 2.Qd6#
      • 1...bxc4!
    • 1.Qg3?
      • 1...Kc5
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...f5
        • 2.Qe5#
      • 1...hxg3!
    • 1.Qf4+?
      • 1...Kc5
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kc3!
    • 1.Qxb5?
      • 1...Kc3
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...f5
        • 2.Qe5#
      • 1...Ke3!
    • 1.Qb6+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Kc3!
  • Keys
    • 1.Qh2!
      • 1...Kc3
        • 2.Sf3#
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINB(a),S_FLIGHT::QAB1(G)
    • K(b);N_SPINB(a),P-FLIGHT::QAR1(G)
    • P(e);N_GUARD::QAB1(G)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT::QAR1(G)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT
    • Try
      • R(E);CHECK,XB(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(G)
      • Refutation
        • P(d);XR(E)
    • Try
      • Q(G);
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::QAB1(G)
        • K(b);N_SPINB(a),P-FLIGHT::QAR1(G)
        • P(e);N_GUARD::QAB1(G)
      • Refutation
        • P(c);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::QAB1(G)
        • K(b);N_SPINB(a),P-FLIGHT::QAR1(G)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT
    • Try
      • Q(G);XP(d)
      • Vars
        • P(e);N_GUARD::QAB1(G)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT::QAR1(G)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(b);N_SPINB(a),S_FLIGHT::B(A)+S(C)
      • K(b);N_SPINB(a),S_FLIGHT::QAB1(G)
      • K(b);N_SPINB(a),P-FLIGHT::QAR1(G)
      • P(e);N_GUARD::QAB1(G)
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