MESON Chess Problem Database

Problem Display
PID: 11013 (2N5/1B5K/r1R1pR2/4k3/2Pp1rp1/5p2/8/3Q4 w - - 0 1)

Boorer, PA

Chess, 1936

2N5/1B5K/r1R1pR2/4k3/2Pp1rp1/5p2/8/3Q4

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Rcxe6#
    • 1...Ra1
      • 2.Rcxe6#
    • 1...Ra2
      • 2.Rcxe6#
    • 1...Ra3
      • 2.Rcxe6#
    • 1...Ra4
      • 2.Rcxe6#
    • 1...Ra5
      • 2.Rcxe6#
    • 1...Ra7
      • 2.Rcxe6#
    • 1...Ra8
      • 2.Rcxe6#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qxf4#
      • 1...Kxf6
        • 2.Qxf4#
      • 1...Rxf6
        • 2.Rc5#
      • 1...Re4
        • 2.Qg5#
      • 1...Rf5
        • 2.Rfxe6#
      • 1...Ke4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qxf4#
      • 1...Ke4
        • 2.Rcxe6#
      • 1...Kxf6
        • 2.Qxf4#
      • 1...Rxf6
        • 2.Rc5#
      • 1...Re4
        • 2.Qg5#
      • 1...Rf5
        • 2.Rfxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • K(e);P-FLIGHT::B(E)+R(C),DCHECK,XP(g)
    • R(f);N_GUARD::R1(C),XP(g)
    • R(f);N_GUARD,P_PINB(E)::R1(C),XP(g)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XR(c)
      • Vars
        • K(e);P_SPINP(g),S_FLIGHT,XR(D)::QAR2(A),XR(c)
        • R(c);SBLOCK,XR(D)::R(C)
        • R(c);OGATE,SBLOCK::QAR2(A)
        • R(c);SBLOCK::R1(D),XP(g)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XR(c)
    • Vars
      • K(e);P-FLIGHT::B(E)+R(C),DCHECK,XP(g)
      • K(e);P_SPINP(g),S_FLIGHT,XR(D)::QAR2(A),XR(c)
      • R(c);SBLOCK,XR(D)::R(C)
      • R(c);OGATE,SBLOCK::QAR2(A)
      • R(c);SBLOCK::R1(D),XP(g)
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Developed and maintained by Brian Stephenson.
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