MESON Chess Problem Database

Problem Display
PID: 134676 (1B6/4p3/2P1k3/1p4P1/1Pq2QK1/2r1NP2/B7/8 w - - 0 1)

Amirov, Talip Khasanovich

Podushkin, S

The Field, 1966

(First published on Thu Apr 21 1966)

1B6/4p3/2P1k3/1p4P1/1Pq2QK1/2r1NP2/B7/8

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa2
      • 2.Qf5#
    • 1...Qb3
      • 2.Qf5#
    • 1...Qd5
      • 2.Bxd5#
      • 2.Qf5#
  • Tries
    • 1.Sxc4?
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qe4#
      • 1...Rxf3
        • 2.Se3#
      • 1...Rxc4!
    • 1.Bxc4+?
      • 1...bxc4
        • 2.Qf5#
      • 1...Rxc4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sc7#
      • 1...Qxf4+
        • 2.Sxf4#
      • 1...Kxd5
        • 2.Qe4#
      • 1...Qxd5
        • 2.Qf5#
      • 1...Qxc6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_PINQ(E),N_SPINQ(b),XB(A)::QAB1(E)
    • Q(b);N_PINQ(E)::QAB1(E)
  • Tries
    • Try
      • S(B);N_SPINQ(E),XQ(b)
      • Threat
        • QAB1(E)
      • Vars
        • K(d);S_FLIGHT::QAB1(E)
        • R(a);N_GUARD,XP(C)::B(A)+S(B)
      • Refutation
        • R(a);P_PINQ(E),P_SPINR(a),XS(B)
    • Try
      • B(A);CHECK,N_SPINQ(E),XQ(b)
      • Vars
        • P(c);XB(A)::QAB1(E)
      • Refutation
        • R(a);P_PINQ(E),XB(A)
  • Actual
    • S(B);N_PINQ(b)
    • Threat
      • S(B)
    • Vars
      • Q(b);CHECK,XQ(E)::B(A)+S(B),DCHECK,XQ(b)
      • K(d);P_SPINQ(b),S_FLIGHT,XS(B)::QAB1(E)
      • Q(b);N_PINQ(E),P_SPINQ(b),XS(B)::QAB1(E)
      • Q(b);N_PINQ(E),XP(H)::QAB1(E)
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