MESON Chess Problem Database

Problem Display
PID: 241378 (6R1/1pkr3Q/1p5R/1P2P3/4B3/8/p7/Kb6 w - - 0 1)

Hjelle, David

Norsk Sjakkblad, 1935

6R1/1pkr3Q/1p5R/1P2P3/4B3/8/p7/Kb6

#2

7 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re7
      • 2.Qxe7#
    • 1...Rf7
      • 2.Qxf7#
    • 1...Rg7
      • 2.Qxg7#
    • 1...Rxh7
      • 2.Rxh7#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qxd7#
      • 1...Rxh7
        • 2.Rxh7#
        • 2.Rc8#
      • 1...Re7
        • 2.Rc8#
        • 2.Qxe7#
      • 1...Rf7
        • 2.Rc8#
        • 2.Qxf7#
      • 1...Rg7
        • 2.Rc8#
        • 2.Qxg7#
      • 1...Bxf5!
    • 1.Rd6?
      • threat
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...Re7
        • 2.Qxe7#
      • 1...Rf7
        • 2.Qxf7#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Rxh7!
  • Keys
    • 1.Bc2!
      • 1...Rxh7
        • 2.Rxh7#
      • 1...Bxc2
        • 2.Qxc2#
      • 1...Re7
        • 2.Qxe7#
      • 1...Rf7
        • 2.Qxf7#
      • 1...Rg7
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(f);OGATEB::QAR2(F),XR(f)
    • R(f);OGATEB::QAR(F),XR(f)
    • R(f);N_SPINR(f),OGATE,XQ(F)::R(E),XR(f)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(F),XR(f)
      • Refutation
        • B(a);XB(B)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);OGATEB::QAR2(F),XR(f)
        • R(f);OGATEB::QAR(F),XR(f)
      • Refutation
        • R(f);N_SPINR(f),XQ(F)
  • Actual
    • B(B);
    • Vars
      • R(f);N_SPINR(f),OGATE,XQ(F)::R(E),XR(f)
      • B(a);OGATE,XB(B)::QAR(F),XB(a)
      • R(f);OGATEB::QAR2(F),XR(f)
      • R(f);OGATEB::QAR(F),XR(f)
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