MESON Chess Problem Database

Problem Display
PID: 96589 (3kBQbq/3PRRrp/3PPBpK/4P1P1/8/8/8/8 w - - 0 1)

Mortensen, Jan Robert (aka 'Adamas')

Problemas, 1969

3kBQbq/3PRRrp/3PPBpK/4P1P1/8/8/8/8

#2

11 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf7
      • 2.Bxf7#
    • 1...Bxf7
      • 2.Rxf7#
  • Tries
    • 1.Qxg7?
      • 1...Bxf7
        • 2.Rxf7#
      • 1...Qxg7+!
  • Keys
    • 1.Rxg7!
      • threat
        • 2.Bxg6#
        • 2.Bf7#
        • 2.Ref7#
      • 1...Qxg7+
        • 2.Rxg7#
      • 1...Bxe6
        • 2.Rxe6#
        • 2.Ref7#
      • 1...Bf7
        • 2.Rexf7#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE,XR(I)::QAR(K)+B(J),XR(b)
    • B(e);OGATE,XR(I)::B(E)+R(H),XB(e)
  • Tries
    • Try
      • Q(K);XR(b)
      • Vars
        • B(e);OGATE,XR(I)::B(E)+R(H),XB(e)
      • Refutation
        • Q(f);CHECK,XQ(K)
  • Actual
    • R(I);XR(b)
    • Threat
      • DUALS(3)
    • Vars
      • Q(f);CHECK,OGATE,XR(I)::B(E)+R(H),XQ(f)
      • B(e);::B(E)+R(H),XB(e)
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