MESON Chess Problem Database

Problem Display
PID: 65704 (1nKR4/2p2QN1/1p2p1NB/1P2p2p/n3k1qR/1p6/1pr1P1b1/1B6 w - - 0 1)

Casa, Alex

2nd Comm., Phenix, 1996

1nKR4/2p2QN1/1p2p1NB/1P2p2p/n3k1qR/1p6/1pr1P1b1/1B6

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qf3#
    • 1...Bf3
      • 2.Qxf3#
      • 2.exf3#
    • 1...Bh3
      • 2.Qf3#
  • Tries
    • 1.Rd4+?
      • 1...exd4
        • 2.Qxe6#
      • 1...Kxd4!
    • 1.Qxc7?
      • threat
        • 2.Qc4#
      • 1...Sc5
        • 2.Qxe5#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Qf4!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qf5#
      • 1...Qf4
        • 2.Qxe5#
      • 1...Sd7
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(c);N_GUARD::QAB1(G)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • P(h);SBLOCK,XR(J)::QAR2(G),XP(k)
      • Refutation
        • K(f);N_SPINR(b),P-FLIGHT,XR(J)
    • Try
      • Q(G);P_SPINQ(G),XP(l)
      • Threat
        • QAR2(G)
      • Vars
        • S(e);N_PINQ(G)::QAR1(G),XP(h)
        • S(m);N_GUARD,N_PINQ(G)::QAB(G),XS(m)
      • Refutation
        • Q(g);
  • Actual
    • Q(G);P_PINP(h),P_SPINQ(G),XP(k)
    • Threat
      • QAB1(G)
    • Vars
      • Q(g);N_PINQ(G)::QAR1(G),XP(h)
      • S(m);N_PINQ(G)::QAR2(G)
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