MESON Chess Problem Database

Problem Display
PID: 121008 (7R/6kb/4pR2/8/7K/8/5Q2/8 w - - 0 1)

Anonymous

Source?, 0000

7R/6kb/4pR2/8/7K/8/5Q2/8

#2

4 + 3

5454 Near Snap 2009
3713 Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rg6+?
      • 1...Kxh8
        • 2.Qf6#
      • 1...Bxg6
        • 2.Qf8#
      • 1...Kxg6!
    • 1.Rf7+?
      • 1...Kg6
        • 2.Qf6#
      • 1...Kh6
        • 2.Qf6#
      • 1...Kxh8!
    • 1.Rff8?
      • threat
        • 2.Qf6#
      • 1...Kg6
        • 2.Qf6#
      • 1...Kh6
        • 2.Qf6#
      • 1...Bf5!
  • Keys
    • 1.Rh6!
      • threat
        • 2.Qf6#
        • 2.Qf8#
      • 1...Kxh6
        • 2.Qf6#
      • 1...Kxh8
        • 2.Qf8#
      • 1...Bf5
        • 2.Qa7#
      • 1...Bg6
        • 2.Qf8#
      • 1...Bg8
        • 2.Qf6#

This anticipates 121425(1907), 16680(1942), 107158(1966)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(D)::QAB(A)
        • B(c);SBLOCK,XR(C)::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT,XR(C)
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);P_SPINB(c),S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);P_SPINB(c),S_FLIGHT::QAR2(A)
      • Refutation
        • B(c);
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P_SPINB(c),S_FLIGHT,XR(C)::QAR2(A)
      • K(b);P_SPINB(c),S_FLIGHT,XR(D)::QAR2(A)
      • B(c);::QAR(A)
      • B(c);::QAB1(A)
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