MESON Chess Problem Database

Problem Display
PID: 77353 (1BB3R1/3n1p2/7p/Rb4N1/3p2kp/K2Qb3/3p1p2/8 w - - 0 1)

Barclay, William A

Holladay, Edgar Dinwiddie

Comm., The Problemist, 1977

1BB3R1/3n1p2/7p/Rb4N1/3p2kp/K2Qb3/3p1p2/8

#2

7 + 10

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Qe2#
  • Tries
    • 1.Se6+?
      • 1...Kf3
        • 2.Sxd4#
      • 1...Kh3
        • 2.Qf5#
      • 1...Kh5
        • 2.Qe2#
      • 1...Bg5!
    • 1.Sh7+?
      • 1...Kh3
        • 2.Qf5#
      • 1...Kh5
        • 2.Qe2#
      • 1...Bg5
        • 2.Sf6#
      • 1...Kf3!
    • 1.Qe4+?
      • 1...Kh5
        • 2.Qf3#
      • 1...Bf4!
    • 1.Qf5+?
      • 1...Kh5
        • 2.Qf3#
      • 1...Kxf5!
  • Keys
    • 1.Se4+!
      • 1...Kf3
        • 2.Sxd2#
      • 1...Kh3
        • 2.Sxf2#
      • 1...Kf5
        • 2.Bxd7#
      • 1...Kh5
        • 2.Qe2#
      • 1...Bg5
        • 2.Sf6#

This is a version

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(g);N_GUARD::QAB(B)
  • Tries
    • Try
      • S(D);CHECK,N_PINS(i)
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::S(D),XP(d)
        • K(e);P_SPINB(c),S_FLIGHT::QAB(B)
        • K(e);P_SPINB(g),S_FLIGHT::QAB(B)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • S(D);CHECK
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::QAB(B)
        • K(e);N_SPINS(i),P_SPINB(g),S_FLIGHT::QAB(B)
        • B(c);P_SPINB(c)::S(D)
      • Refutation
        • K(e);N_SPINS(i),P_SPINB(c),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);N_SPINS(i),S_FLIGHT::QAB(B)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(B);CHECK,N_PINS(i)
      • Vars
        • K(e);S_FLIGHT::QAB(B)
      • Refutation
        • K(e);P_SPINB(g),P_SPINS(i),S_FLIGHT,XQ(B)
  • Actual
    • S(D);CHECK
    • Vars
      • K(e);N_SPINS(i),P_SPINB(c),S_FLIGHT::S(D),XP(a)
      • K(e);P_SPINB(c),S_FLIGHT::S(D),XP(b)
      • K(e);P_SPINB(g),S_FLIGHT::B(F),XS(i)
      • K(e);N_SPINS(i),P_SPINB(g),S_FLIGHT::QAB(B)
      • B(c);P_SPINB(c)::S(D)
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Developed and maintained by Brian Stephenson.
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