MESON Chess Problem Database

Problem Display
PID: 187660 (8/1Q6/4pR1K/4k3/2b2N2/2P5/6P1/5R2 w - - 0 1)

Palkoska, Emil

Tidskrift for Schack, 1909

8/1Q6/4pR1K/4k3/2b2N2/2P5/6P1/5R2

#2

7 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Sd3#
  • Tries
    • 1.Qc7+?
      • 1...Kxf6
        • 2.Se2#
        • 2.Sd3#
        • 2.Sd5#
        • 2.Sh5#
      • 1...Ke4!
    • 1.Qd7?
      • threat
        • 2.Qd4#
      • 1...Ke4
        • 2.Qd4#
      • 1...Kxf6
        • 2.Sd3#
      • 1...Bd5!
    • 1.Qb8+?
      • 1...Kxf6
        • 2.Sd5#
      • 1...Ke4!
  • Keys
    • 1.Qb4!
      • 1...Ke4
        • 2.Re1#
      • 1...Kxf6
        • 2.Sd3#
      • 1...Bxf1
        • 2.Qd4#
      • 1...Ba2
        • 2.Qd4#
      • 1...Be2
        • 2.Qd4#
      • 1...Bb3
        • 2.Qd4#
      • 1...Bd3
        • 2.Qd4#
      • 1...Bb5
        • 2.Qd4#
      • 1...Bd5
        • 2.Sd3#
        • 2.Sg6#
      • 1...Ba6
        • 2.Qd4#

This is a version of 22905

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT,XR(E)::R(A)+S(D)
  • Tries
    • Try
      • Q(G);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • K(b);P-FLIGHT::QAR1(G)
        • K(b);S_FLIGHT,XR(E)::R(A)+S(D)
      • Refutation
        • B(a);
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(E)::R(A)+S(D),DCHECK
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(b);P-FLIGHT,P_SPINB(a)::R(A)
      • K(b);S_FLIGHT,XR(E)::R(A)+S(D)
      • B(a);OGATE,XR(A)::QAB1(G)
      • B(a);OGATE::QAB1(G)
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