MESON Chess Problem Database

Problem Display
PID: 222834 (8/K3p1r1/p3N3/8/4b2p/2p1kBR1/r2b4/7Q w - - 0 1)

Hirsch, Heinrich

Wiener Hausfrauen-Zeitung, 1883

8/K3p1r1/p3N3/8/4b2p/2p1kBR1/r2b4/7Q

#2

5 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf2
      • 2.Qg1#
    • 1...Bd3
      • 2.Qg1#
    • 1...Bxf3
      • 2.Qxf3#
  • Tries
    • 1.Bg4+?
      • 1...Kf2
        • 2.Qg1#
      • 1...Bf3
        • 2.Qxf3#
      • 1...hxg3!
    • 1.Qe1+?
      • 1...Kd3
        • 2.Qxe4#
      • 1...Bxe1!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qe2#
      • 1...Kf2
        • 2.Qg1#
      • 1...Kd3
        • 2.Be2#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...Bc1
        • 2.Qd4#
      • 1...Be1
        • 2.Qd4#
      • 1...Bd3
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAB1(A)
    • B(e);SBLOCK::QAB(A)
    • B(e);OGATE,P_SPINB(e),XB(B)::QAR1(A),XB(e)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(A)
        • B(e);N_GUARD,P_SPINB(e)::QAR1(A),XB(e)
      • Refutation
        • P(f);XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAB1(A),XB(e)
      • Refutation
        • B(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(d);S_FLIGHT::QAB1(A)
      • K(d);P-FLIGHT,P_SPINB(b)::R(C)+B(B),DCHECK
      • B(e);OGATE,P_SPINB(e),XB(B)::QAR1(A),XB(e)
      • B(b);OGATE::QAB1(A)
      • B(e);SBLOCK::QAB(A)
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Developed and maintained by Brian Stephenson.
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