MESON Chess Problem Database

Problem Display
PID: 121217 (8/4b3/8/1Kbkp3/R4BP1/5p2/2Q5/7q w - - 0 1)

Vogel, Peter

Source?, 1994

8/4b3/8/1Kbkp3/R4BP1/5p2/2Q5/7q

#2

5 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qc6#
    • 1...Bf2
      • 2.Qc6#
    • 1...Ba3
      • 2.Qc6#
    • 1...Be3
      • 2.Qc6#
    • 1...Bd4
      • 2.Qc6#
    • 1...Bb6
      • 2.Qc6#
    • 1...Bcd6
      • 2.Qb3#
      • 2.Qa2#
      • 2.Qc4#
    • 1...Ba7
      • 2.Qc6#
    • 1...Bed6
      • 2.Qb3#
      • 2.Qa2#
      • 2.Qc4#
    • 1...e4
      • 2.Qb3#
      • 2.Qxe4#
      • 2.Qa2#
      • 2.Qc4#
  • Tries
    • 1.Qe4+?
      • 1...Kd6
        • 2.Qc6#
      • 1...Ke6!
  • Keys
    • 1.Rd4+!
      • 1...Kxd4
        • 2.Qc4#
      • 1...Ke6
        • 2.Qf5#
      • 1...Bxd4
        • 2.Qc6#
      • 1...exd4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(c);OGATE::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT,P_SPINP(e)::QAR1(A)
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT
  • Actual
    • R(B);CHECK
    • Vars
      • K(d);P-FLIGHT,XR(B)::QAR1(A)
      • K(d);S_FLIGHT::QAB1(A)
      • B(c);OGATE,SBLOCK,XR(B)::QAB1(A)
      • P(e);SBLOCK,S_CUTB(c),XR(B)::QAR2(A)
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Developed and maintained by Brian Stephenson.
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