MESON Chess Problem Database

Problem Display
PID: 240502 (8/1B6/5K1p/4Q3/6kn/8/5P2/8 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Problemist Pribuzhya, 1992

8/1B6/5K1p/4Q3/6kn/8/5P2/8

#2

4 + 3

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kh3
      • 2.Qg3#
    • 1...h5
      • 2.Qg3#
  • Tries
    • 1.Qg5+?
      • 1...Kh3
        • 2.Qg3#
      • 1...hxg5!
  • Keys
    • 1.Qh2!
      • 1...Kh5
        • 2.Bf3#
      • 1...Sg2
        • 2.f3#
      • 1...Sf3
        • 2.Bc8#
      • 1...Sf5
        • 2.f3#
      • 1...Sg6
        • 2.f3#
      • 1...h5
        • 2.Qg3#

This anticipates 159220(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAR1(B)
    • P(c);SBLOCK::QAR1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);P_SPINS(b),S_FLIGHT::B(D)
      • S(b);N_GUARD::P(A)
      • S(b);N_GUARD,SBLOCK::B(D)
      • P(c);SBLOCK::QAR1(B)
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