MESON Chess Problem Database

Problem Display
PID: 213905 (8/B2p1N2/3P4/3k2P1/P2p2K1/2bP4/1P6/1Q6 w - - 0 1)

Balo, Tibor

Freie Presse, 1991

8/B2p1N2/3P4/3k2P1/P2p2K1/2bP4/1P6/1Q6

#2

9 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qh1#
    • 1...Ke6
      • 2.Qa2#
  • Tries
    • 1.Kf5?
      • threat
        • 2.Qh1#
      • 1...Kc6
        • 2.Qh1#
      • 1...Be1!
    • 1.Qc1?
      • 1...Kc6
        • 2.Qh1#
      • 1...Bxb2
        • 2.Qc4#
      • 1...Be1
        • 2.Qc4#
      • 1...Bd2
        • 2.Qc4#
      • 1...Bb4
        • 2.Qc4#
      • 1...Ba5
        • 2.Qc4#
      • 1...Ke6!
    • 1.Qe1?
      • threat
        • 2.Qe4#
      • 1...Kc6
        • 2.Qh1#
        • 2.Qe4#
      • 1...Bxe1!
    • 1.bxc3?
      • 1...Kc6
        • 2.Qh1#
        • 2.Qb5#
      • 1...Ke6
        • 2.Qa2#
        • 2.Qb3#
      • 1...dxc3!
  • Keys
    • 1.Qc2!
      • 1...Kc6
        • 2.Qg2#
      • 1...Ke6
        • 2.Qb3#
      • 1...Bxb2
        • 2.Qc4#
      • 1...Be1
        • 2.Qc4#
      • 1...Bd2
        • 2.Qc4#
      • 1...Bb4
        • 2.Qc4#
      • 1...Ba5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Vars
        • K(c);P_SPINB(a),S_FLIGHT::QAB(A)
        • B(a);OGATE,XP(B)::QAB1(A)
        • B(a);OGATE::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • B(a);XQ(A)
    • Try
      • P(B);XB(a)
      • Refutation
        • P(b);XP(B)
  • Actual
    • Q(A);
    • Vars
      • K(c);P_SPINB(a),S_FLIGHT::QAB(A)
      • K(c);S_FLIGHT::QAB(A)
      • B(a);OGATE,XP(B)::QAB1(A)
      • B(a);OGATE::QAB1(A)
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