MESON Chess Problem Database

Problem Display
PID: 241368 (8/8/4R3/Q1p2B2/1q2Np1B/6r1/6P1/2N1k1K1 w - - 0 1)

Gavrilov, Constantin Grigorievich

Shakhmaty i Shashki, 1940

8/8/4R3/Q1p2B2/1q2Np1B/6r1/6P1/2N1k1K1

#2

8 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Qxd2#
  • Tries
    • 1.Qxb4+?
      • 1...Kd1
        • 2.Qd2#
      • 1...cxb4!
  • Keys
    • 1.Sb3!
      • 1...Kd1
        • 2.Sf2#
      • 1...Ke2
        • 2.Sc3#
      • 1...Qxa5
        • 2.Sc3#
      • 1...Qd2
        • 2.Qxd2#
      • 1...Qc3
        • 2.Sxc3#
      • 1...f3
        • 2.Sf2#
      • 1...c4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(c);OGATE::QAB1(F),XQ(c)
  • Tries
    • Try
      • Q(F);CHECK,XQ(c)
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT::QAR1(F)
      • Refutation
        • P(e);XQ(F)
  • Actual
    • S(A);
    • Vars
      • K(a);N_SPINQ(c),N_SPINR(b),P-FLIGHT::S(D)
      • K(a);N_SPINQ(c),N_SPINR(b),P-FLIGHT::R(H)+S(D),DCHECK
      • Q(c);N_GUARD,N_SPINQ(c),XQ(F)::R(H)+S(D)
      • Q(c);OGATE::QAB1(F),XQ(c)
      • Q(c);N_GUARD::R(H)+S(D),XQ(c)
      • P(d);::R(H)+S(D)
      • P(e);::R(H)+S(D)
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