MESON Chess Problem Database

Problem Display
PID: 23951 (3rN3/1Q2p3/4P2K/3PP3/R2n1k2/6n1/3P2PB/1B6 w - - 0 1)

Barnes, Barry Peter

The Problemist, 1997

3rN3/1Q2p3/4P2K/3PP3/R2n1k2/6n1/3P2PB/1B6

#2

11 + 5

4199 Barnes about Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Bxg3#
  • Tries
    • 1.Qxe7?
      • threat
        • 2.Qg5#
      • 1...Kg4
        • 2.Qg5#
      • 1...Kxe5!
    • 1.d6?
      • threat
        • 2.Qe4#
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kg4!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qxg3#
      • 1...Kg4
        • 2.Qxg3#
      • 1...Kxe5
        • 2.Bxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XP(G)::B(D),XS(a)
  • Tries
    • Try
      • Q(J);XP(d)
      • Threat
        • QAB1(J)
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT,P_SPINS(b)::QAR1(J)
      • Refutation
        • K(c);S_FLIGHT,XP(G)
    • Try
      • P(F);
      • Threat
        • QAR1(J)
      • Vars
        • K(c);S_FLIGHT,XP(G)::QAR1(J)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT,P_SPINS(b)
  • Actual
    • Q(J);
    • Threat
      • QAB1(J),XS(a)
    • Vars
      • K(c);N_SPINS(a),P-FLIGHT,P_SPINS(b)::QAR1(J),XS(a)
      • K(c);S_FLIGHT,XP(G)::B(D),XS(a)
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