MESON Chess Problem Database

Problem Display
PID: 224648 (8/6R1/4P3/2NP1q2/1Q2Bk1P/5p1p/5K2/5b2 w - - 0 1)

Cook, Eugene Beauharnais

Charleston Sunday News, 1888

8/6R1/4P3/2NP1q2/1Q2Bk1P/5p1p/5K2/5b2

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Qxe4#
    • 1...Qg4
      • 2.Qb8#
    • 1...Qh7
      • 2.Qb8#
    • 1...Qe5
      • 2.Qd2#
    • 1...Bg2
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
  • Tries
    • 1.Bd3+?
      • 1...Qe4
        • 2.Qxe4#
      • 1...Ke5!
    • 1.Bxf3+?
      • 1...Ke5
        • 2.Sd7#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Bc4!
  • Keys
    • 1.Rg4+!
      • 1...Kxg4
        • 2.Bxf3#
      • 1...Ke5
        • 2.Sd7#
      • 1...Qxg4
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(e);OGATE,P_SPINQ(e),XB(C)::QAR1(B),XQ(e)
    • Q(e);N_GUARD::QAB(B)
    • Q(e);SBLOCK::QAB(B)
    • B(a);N_GUARD::S(E)
    • B(a);N_GUARD::S(E),XB(a)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::QAR1(B),XQ(e)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(C);CHECK,XP(b)
      • Vars
        • K(d);P_PINB(C),S_FLIGHT::S(E)
        • Q(e);N_GUARD,P_SPINQ(e)::QAR1(B),XQ(e)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • R(H);CHECK
    • Vars
      • K(d);P-FLIGHT,XR(H)::QAR(B)+B(C),DCHECK,XP(b)
      • K(d);S_FLIGHT::S(E)
      • Q(e);SBLOCK,XR(H)::QAB(B)
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