MESON Chess Problem Database

Problem Display
PID: 245057 (3Q4/8/8/4p1K1/2b1k3/3R4/7B/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Smena (Moscow), 1998

3Q4/8/8/4p1K1/2b1k3/3R4/7B/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb5
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Ba6
      • 2.Qd5#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Re3#
      • 1...exf4
        • 2.Qd4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bxd3!
    • 1.Bxe5?
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Re3#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bxd3!
    • 1.Qa8+?
      • 1...Bd5
        • 2.Qxd5#
      • 1...Kxd3!
  • Keys
    • 1.Bg1!
      • threat
        • 2.Re3#
      • 1...Bxd3
        • 2.Qa8#
      • 1...Bd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAB1(D)
    • B(a);N_GUARD::QAB1(D),XB(a)
  • Tries
    • Try
      • B(A);
      • Threat
        • R1(B)
      • Vars
        • P(c);N_GUARD,XB(A)::QAR1(D)
        • B(a);N_GUARD::QAB1(D),XB(a)
      • Refutation
        • B(a);XR(B)
    • Try
      • B(A);XP(c)
      • Threat
        • QAR1(D)
      • Vars
        • K(b);P-FLIGHT,XB(A)::R(B)
        • B(a);N_GUARD::QAB1(D),XB(a)
      • Refutation
        • B(a);XR(B)
    • Try
      • Q(D);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(D),XB(a)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
  • Actual
    • B(A);
    • Threat
      • R1(B)
    • Vars
      • B(a);N_GUARD,SBLOCK,XR(B)::QAB(D)
      • B(a);N_GUARD::QAB1(D),XB(a)
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