MESON Chess Problem Database

Problem Display
PID: 181912 (8/8/4p3/2PB2PQ/3k4/2R2P2/8/4K3 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Skakbladet, 1905

8/8/4p3/2PB2PQ/3k4/2R2P2/8/4K3

#2

7 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...exd5
      • 2.Qh8#
  • Tries
    • 1.Qg4+?
      • 1...Kxd5
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Kxc3!
    • 1.Qg6?
      • 1...Kxd5
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...exd5
        • 2.Qf6#
        • 2.Qg7#
      • 1...e5
        • 2.Qd3#
      • 1...Kxc3!
    • 1.Qh4+?
      • 1...Kxd5
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Kxc3!
    • 1.Qh7?
      • 1...Kxd5
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...exd5
        • 2.Qg7#
        • 2.Qh8#
      • 1...e5
        • 2.Qd3#
      • 1...Kxc3!
  • Keys
    • 1.Qh2!
      • 1...Kxc3
        • 2.Qd2#
      • 1...Kxd5
        • 2.Qd6#
      • 1...exd5
        • 2.Qh8#
      • 1...e5
        • 2.Qd2#

This is a version of 181747

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD,SBLOCK,XB(E)::QAB(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(E)::QAB1(G)
        • K(a);S_FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(G);
      • Vars
        • K(a);P-FLIGHT,XB(E)::QAB1(G)
        • K(a);S_FLIGHT::QAR1(G)
        • P(b);SBLOCK::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(E)::QAB1(G)
        • K(a);S_FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(G);
      • Vars
        • K(a);P-FLIGHT,XB(E)::QAB1(G)
        • K(a);S_FLIGHT::QAR1(G)
        • P(b);SBLOCK::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT,XR(B)::QAB1(G)
      • K(a);OGATEB,P-FLIGHT,XB(E)::QAR1(G)
      • P(b);N_GUARD,SBLOCK,XB(E)::QAB(G)
      • P(b);SBLOCK::QAR2(G)
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