MESON Chess Problem Database

Problem Display
PID: 57576 (7Q/3pbp2/1p6/8/1r2k3/1R2N1P1/3BK3/8 w - - 0 1)

Hermanson, Halvar

Chess Life, 1957

7Q/3pbp2/1p6/8/1r2k3/1R2N1P1/3BK3/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bh4
      • 2.Rxb4#
    • 1...Bg5
      • 2.Rxb4#
    • 1...Bd8
      • 2.Rxb4#
    • 1...d6
      • 2.Rxb4#
  • Tries
    • 1.Qh1+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Ke5!
    • 1.Qa8+?
      • 1...Kd4
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Ke5!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Qe5#
        • 2.Qh1#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Rb5
        • 2.Qd4#
        • 2.Qh1#
      • 1...Bh4
        • 2.Rxb4#
        • 2.Qe5#
        • 2.Qxh4#
      • 1...Bd6
        • 2.Qh1#
        • 2.Qa8#
      • 1...Bf6
        • 2.Qh1#
        • 2.Qh7#
      • 1...d6
        • 2.Rxb4#
        • 2.Qh1#
      • 1...f6
        • 2.Qh1#
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(e);N_GUARD::R(C),XR(a)
    • P(d);S_CUTB(e)::R(C),XR(a)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
        • P(d);P_SPINP(d)::QAB1(F),XP(d)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);N_GUARD::QAR1(F),XR(a)
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