MESON Chess Problem Database

Problem Display
PID: 245056 (8/8/4p3/1Q6/3kPR2/8/2bK4/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Smena (Moscow), 1998

8/8/4p3/1Q6/3kPR2/8/2bK4/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.e5#
    • 1...Bb3
      • 2.e5#
    • 1...Ba4
      • 2.e5#
    • 1...e5
      • 2.Qb4#
      • 2.Qd5#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Qc3#
      • 1...Bxe4
        • 2.Rxe4#
      • 1...Ke5!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Qb4#
      • 1...Kxe4
        • 2.Qe5#
      • 1...exf5
        • 2.Qd5#
      • 1...Bb3
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::R(C)+P(B)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • B(a);OGATE,P_SPINB(a),XP(B)::R1(C),XB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(C);
    • Threat
      • QAR2(D)
    • Vars
      • K(b);P-FLIGHT,XP(B)::QAR1(D)
      • P(c);N_GUARD,XR(C)::QAR1(D)
      • B(a);N_GUARD::QAR1(D)
      • B(a);N_GUARD::QAR1(D),XB(a)
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