MESON Chess Problem Database

Problem Display
PID: 167747 (k7/1Rp5/PbB5/1K6/8/8/8/8 w - - 0 1)

Pypa, Volodimir Iosifovich

Sinfonie Scacchistiche, 1979

k7/1Rp5/PbB5/1K6/8/8/8/8

#2

4 + 3

145 StrateGems 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7
      • 2.Rb6#
  • Tries
    • 1.Ra7+?
      • 1...Kb8
        • 2.Ra8#
      • 1...Kxa7!
    • 1.Rb8+?
      • 1...Ka7
        • 2.Ra8#
      • 1...Kxb8!
  • Keys
    • 1.a7!
      • threat
        • 2.Rxc7#
      • 1...Bxa7
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::B(C)+R(D)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT::R1(D)
      • Refutation
        • K(c);P-FLIGHT,XR(D)
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT::R1(D)
      • Refutation
        • K(c);P-FLIGHT,XR(D)
  • Actual
    • P(B);
    • Threat
      • B(C)+R(D),XP(b)
    • Vars
      • B(a);SBLOCK,XP(B)::B(C)+R(D)
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