MESON Chess Problem Database

Problem Display
PID: 221420 (8/K7/1Br5/3nRQ2/kb6/8/BR6/1N6 w - - 0 1)

Lind, Jens Ingemar

SuperProblem 158. TT, 2015

8/K7/1Br5/3nRQ2/kb6/8/BR6/1N6

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Qc2#
    • 1...Bc5
      • 2.Qc2#
    • 1...Sc3
      • 2.Bb3#
      • 2.Qc2#
    • 1...Se3
      • 2.Bb3#
    • 1...Sf4
      • 2.Bb3#
    • 1...Sxb6
      • 2.Bb3#
    • 1...Sf6
      • 2.Bb3#
    • 1...Sc7
      • 2.Bb3#
    • 1...Se7
      • 2.Bb3#
  • Tries
    • 1.Rxb4+?
      • 1...Sxb4
        • 2.Ra5#
      • 1...Kxb4!
    • 1.Qc2+?
      • 1...Kb5
        • 2.Sa3#
      • 1...Rxc2!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxc6#
      • 1...Kb5
        • 2.Sc3#
      • 1...Sc3
        • 2.Bb3#
      • 1...Sc7
        • 2.Bb3#
      • 1...Se7
        • 2.Bb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(b);S_CUTR(d)::QAB(E)
    • B(b);P_PINB(F),S_CUTR(d)::QAB(E)
    • S(c);::B(B)
    • S(c);XB(F)::B(B)
  • Tries
    • Try
      • R(C);CHECK,XB(b)
      • Vars
        • S(c);OGATE,SBLOCK,XR(C)::R1(D)
      • Refutation
        • K(a);P-FLIGHT,XR(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P_SPINB(b),P_SPINS(c),S_FLIGHT::S(A)
      • Refutation
        • R(d);XQ(E)
  • Actual
    • Q(E);P_PINR(d)
    • Threat
      • QAB(E),XR(d)
    • Vars
      • K(a);P_SPINB(b),P_SPINS(c),S_FLIGHT::S(A)
      • S(c);::B(B)
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Developed and maintained by Brian Stephenson.
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