MESON Chess Problem Database

Problem Display
PID: 51697 (8/8/8/4Q3/R6p/1K5N/2B3k1/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

7th Prize, Ural Miniature Ty., 1997

8/8/8/4Q3/R6p/1K5N/2B3k1/8

#2

5 + 2

56 The Problemist 2004
5454 Near Snap 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kh1
      • 2.Be4#
  • Tries
    • 1.Bd1?
      • 1...Kf1
        • 2.Qe2#
      • 1...Kh1
        • 2.Bf3#
      • 1...Kxh3!
    • 1.Bd3?
      • 1...Kh1
        • 2.Be4#
      • 1...Kxh3
        • 2.Bf1#
      • 1...Kf3!
    • 1.Rg4+?
      • 1...Kf1
        • 2.Bd3#
        • 2.Rg1#
      • 1...Kh1
        • 2.Sf2#
        • 2.Be4#
        • 2.Rg1#
      • 1...Kf3
        • 2.Bd1#
        • 2.Qe4#
      • 1...Kxh3!
    • 1.Qh2+?
      • 1...Kf1
        • 2.Ra1#
        • 2.Qf2#
      • 1...Kf3
        • 2.Qf2#
      • 1...Kxh2!
    • 1.Qf4?
      • 1...Kh1
        • 2.Be4#
      • 1...Kxh3!
    • 1.Qe3?
      • 1...Kf1
        • 2.Qf2#
      • 1...Kh1
        • 2.Qg1#
      • 1...Kh2!
  • Keys
    • 1.Ra2!
      • 1...Kf1
        • 2.Bd3#
      • 1...Kh1
        • 2.Be4#
      • 1...Kf3
        • 2.Bd1#
      • 1...Kxh3
        • 2.Bf5#

Anticipated by 19272(1951)

This anticipates 157885(2009)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(A)
  • Tries
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::B(A)
        • K(a);S_FLIGHT,XS(C)::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(D);
    • Vars
      • K(a);S_FLIGHT::B(A)
      • K(a);S_FLIGHT,XS(C)::B(A)
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