MESON Chess Problem Database

Problem Display
PID: 121070 (8/4Q3/RN2BP2/P3kp2/7P/8/7K/6B1 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Nationaltidende, 1987

8/4Q3/RN2BP2/P3kp2/7P/8/7K/6B1

#2

9 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Bh3#
      • 2.Bg4#
      • 2.Bd7#
      • 2.Bc8#
  • Tries
    • 1.Kg3?
      • threat
        • 2.Ba2#
        • 2.Bb3#
        • 2.Bc4#
        • 2.Bd5#
        • 2.Bd7#
        • 2.Bf7#
        • 2.Bc8#
        • 2.Bg8#
      • 1...Ke4
        • 2.Bc4#
      • 1...f4+!
    • 1.Be3?
      • threat
        • 2.Ba2#
        • 2.Bb3#
        • 2.Bc4#
        • 2.Bd5#
        • 2.Bd7#
        • 2.Bf7#
        • 2.Bc8#
        • 2.Bg8#
      • 1...f4
        • 2.Bh3#
        • 2.Bg4#
        • 2.Bd7#
        • 2.Bc8#
      • 1...Ke4!
    • 1.Bxf5+?
      • 1...Kf4
        • 2.Qe4#
      • 1...Kxf5!
    • 1.Qb4?
      • threat
        • 2.Sd7#
      • 1...Kxe6
        • 2.Qe7#
      • 1...Kxf6!
    • 1.Qc5+?
      • 1...Ke4
        • 2.Qe3#
        • 2.Qxf5#
      • 1...Kf4
        • 2.Qxf5#
      • 1...Kxe6
        • 2.Qe7#
      • 1...Kxf6!
  • Keys
    • 1.Qh7!
      • 1...Ke4
        • 2.Qxf5#
      • 1...Kf4
        • 2.Qxf5#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kxe6
        • 2.Qe7#
      • 1...Kxf6
        • 2.Sd7#
      • 1...f4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(8)
      • Vars
        • K(a);P-FLIGHT::QAR(I)+B(G)
      • Refutation
        • P(b);CHECK
    • Try
      • B(A);
      • Threat
        • DUALS(8)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(G);CHECK,XP(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(I)
      • Refutation
        • K(a);P-FLIGHT,XB(G)
    • Try
      • Q(I);
      • Threat
        • S(F)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(G)::QAR1(I)
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(I),XP(b)
        • K(a);OGATEB,P-FLIGHT,XB(G)::QAR1(I)
      • Refutation
        • K(a);S_FLIGHT,XP(H)
  • Actual
    • Q(I);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::QAB1(I),XP(b)
      • K(a);S_FLIGHT::QAR1(I),XP(b)
      • K(a);S_FLIGHT::R(E)+S(F),DCHECK
      • K(a);OGATEB,P-FLIGHT,XB(G)::QAR1(I)
      • K(a);S_FLIGHT,XP(H)::S(F)
      • P(b);SBLOCK::S(F)
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