MESON Chess Problem Database

Problem Display
PID: 16468 (4R3/4nB2/2p1p1p1/2K1k1B1/8/6N1/8/8 w - - 0 1)

Stewart, John

Young Scotland, 1940

4R3/4nB2/2p1p1p1/2K1k1B1/8/6N1/8/8

#2

5 + 5

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Rxe6#
    • 1...Sf5
      • 2.Rxe6#
    • 1...Sc8
      • 2.Rxe6#
    • 1...Sg8
      • 2.Rxe6#
  • Tries
    • 1.Bg8?
      • 1...Sd5
        • 2.Rxe6#
      • 1...Sf5
        • 2.Rxe6#
      • 1...Sc8
        • 2.Rxe6#
      • 1...Sxg8!
  • Keys
    • 1.Bxe6!
      • 1...Kxe6
        • 2.Rxe7#
      • 1...Sd5
        • 2.Bxd5#
      • 1...Sf5
        • 2.Bxf5#
      • 1...Sc8
        • 2.Bxc8#
      • 1...Sg8
        • 2.Bxg8#

Anticipated by 120941(1938-1939)

This anticipates 138916(1974)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(e);OGATE,P_SPINP(c)::R1(E),XP(c)
  • Tries
    • Try
      • B(D);
      • Vars
        • S(e);OGATE,P_SPINP(c)::R1(E),XP(c)
      • Refutation
        • S(e);P_SPINP(c),XB(D)
  • Actual
    • B(D);XP(c)
    • Vars
      • K(a);OGATEB,P-FLIGHT,P_SPINS(e),XB(D)::R1(E),XS(e)
      • S(e);OGATEB::R(E)+B(D),XS(e)
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