MESON Chess Problem Database

Problem Display
PID: 241423 (8/3N4/3Pp1p1/1K1kBbQ1/6R1/3prr2/4pq2/b6B w - - 0 1)

Hjelle, David

Arbejder-Skak, 1951

8/3N4/3Pp1p1/1K1kBbQ1/6R1/3prr2/4pq2/b6B

#2

7 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Rxd4#
    • 1...Be4
      • 2.Sb6#
    • 1...Bxg4
      • 2.Sf6#
  • Tries
    • 1.Qxe3?
      • threat
        • 2.Sb6#
        • 2.Sf6#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Qh4
        • 2.Sb6#
        • 2.Qc5#
      • 1...Bd4
        • 2.Sf6#
        • 2.Rxd4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Qxe3!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qa8#
      • 1...Rxe5
        • 2.Sf6#
      • 1...Bxe5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::R1(B),XB(a)
    • B(h);N_SPINR(f)::S(G)
    • B(h);XR(B)::S(G)
  • Tries
    • Try
      • Q(E);XR(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);OGATE,XB(D)::QAR1(E),XB(a)
        • B(h);N_GUARD,N_SPINR(f)::QAB1(E),XB(h)
      • Refutation
        • Q(c);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • R(e);SBLOCK,XB(D)::S(G)
      • B(a);SBLOCK,XB(D)::S(G)
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