MESON Chess Problem Database

Problem Display
PID: 157940 (5B2/4Q3/8/8/3p1k2/3B4/7N/5K2 w - - 0 1)

Antipin, Ivan Ivanovich

Utro, 1993

5B2/4Q3/8/8/3p1k2/3B4/7N/5K2

#2

5 + 2

5454 Near Snap 2016
15148 Sadier Collection 2016
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qd6+?
      • 1...Kg5
        • 2.Qh6#
      • 1...Ke3!
    • 1.Qe6?
      • 1...Kg5
        • 2.Qh6#
      • 1...Kg3!
  • Keys
    • 1.Qh7!
      • 1...Ke3
        • 2.Bh6#
      • 1...Kg3
        • 2.Bd6#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kg5
        • 2.Qh6#

Anticipated by 2475(0000), 223485(1926), 140936(1980/I), 164208(1988)

This anticipates 104591(1999), 171073(2002), 79157(2004), 153216(2011)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(b);S_FLIGHT::B(E)
      • K(b);S_FLIGHT::QAR1(D)
      • K(b);S_FLIGHT::QAB1(D)
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