MESON Chess Problem Database

Problem Display
PID: 233742 (1R6/N7/4Kp2/p4BN1/2p5/p1k1P1Q1/5p2/n1B1b3 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Freie Presse, 1985

1R6/N7/4Kp2/p4BN1/2p5/p1k1P1Q1/5p2/n1B1b3

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...f1B
      • 2.Qxe1#
    • 1...fxg5
      • 2.Qe5#
  • Tries
    • 1.Bb1?
      • threat
        • 2.Se4#
      • 1...fxg5
        • 2.Qe5#
      • 1...f5
        • 2.Qe5#
      • 1...Sc2!
    • 1.Qxf2?
      • threat
        • 2.Qxe1#
      • 1...Bd2
        • 2.Bxd2#
        • 2.Qxd2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc2#
      • 1...Bxf2!
    • 1.e4+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Kc2!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qd4#
      • 1...Sc2
        • 2.Se4#
      • 1...Sb3
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(c);OGATE::QAB(C),XB(b)
    • P(h);N_GUARD,XS(E)::QAB(C)
  • Tries
    • Try
      • B(D);
      • Threat
        • S(E)
      • Vars
        • P(h);N_GUARD,XS(E)::QAB(C)
        • P(h);N_GUARD::QAB(C)
      • Refutation
        • S(a);
    • Try
      • Q(C);XP(c)
      • Threat
        • QAB(C),XB(b)
      • Vars
        • S(a);N_GUARD::QAR1(C),XS(a)
        • S(a);N_GUARD::QAR1(C)
      • Refutation
        • B(b);XQ(C)
    • Try
      • P(B);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(C)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • S(a);SBLOCK::S(E)
      • S(a);SBLOCK::S(G)
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