MESON Chess Problem Database

Problem Display
PID: 241412 (8/2br1b2/2N5/1PpkpP2/7Q/B7/2PPP3/2R1R2K w - - 0 1)

Hjelle, David

Arbejder-Skak, 1950

8/2br1b2/2N5/1PpkpP2/7Q/B7/2PPP3/2R1R2K

#2

11 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Se7#
      • 2.c4#
    • 1...Bd6
      • 2.c4#
    • 1...c4
      • 2.e4#
  • Tries
    • 1.Qc4+?
      • 1...Kd6
        • 2.Bxc5#
        • 2.Qxc5#
      • 1...Kxc4!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Qxe5#
      • 1...Kxe4!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kd6
        • 2.Qxe5#
      • 1...c4
        • 2.e4#
      • 1...e4
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(d);SBLOCK::P(D)
    • P(a);SBLOCK::P(F)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAB1(H),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR2(H)
    • Vars
      • K(b);S_FLIGHT::QAB1(H)
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(H),XP(c)
      • P(a);SBLOCK::P(F)
      • P(c);SBLOCK::P(D)
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