MESON Chess Problem Database

Problem Display
PID: 158422 (8/KN6/8/1p6/pk6/2R5/3B4/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1986

8/KN6/8/1p6/pk6/2R5/3B4/8

#2

4 + 3

15148 Sadier Collection 2016
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5?
      • 1...a3
        • 2.Rc1#
        • 2.Rc2#
      • 1...Ka5!
    • 1.Sd6?
      • 1...Ka5
        • 2.Rc5#
      • 1...a3!
    • 1.Sd8?
      • threat
        • 2.Sc6#
      • 1...Ka5
        • 2.Sc6#
        • 2.Rc5#
      • 1...a3!
  • Keys
    • 1.Sa5!
      • threat
        • 2.Sc6#
      • 1...Kxa5
        • 2.Rc5#
      • 1...a3
        • 2.Rc4#

Anticipated by 221924(1967), 247915(1979)

This anticipates 174487(1998)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);
      • Vars
        • K(b);S_FLIGHT::B(A)+R(B)
      • Refutation
        • P(a);
    • Try
      • S(D);
      • Threat
        • S(D)
      • Refutation
        • P(a);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(b);S_FLIGHT,XS(D)::B(A)+R(B)
      • P(a);SBLOCK::B(A)+R(B),DCHECK
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