MESON Chess Problem Database

Problem Display
PID: 112777 (8/8/7N/2pkp3/B2B4/3QP3/3K4/8 w - - 0 1)

EBF of Toronto

Toronto Globe, 1880

8/8/7N/2pkp3/B2B4/3QP3/3K4/8

#2

6 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bxc5+?
      • 1...Ke6
        • 2.Qd6#
      • 1...Kxc5!
    • 1.Bxe5+?
      • 1...Ke6
        • 2.Qd6#
      • 1...Kxe5!
  • Keys
    • 1.Qe4+!
      • 1...Kc4
        • 2.Ba1#
        • 2.Bb2#
        • 2.Bc3#
        • 2.Bxe5#
      • 1...Kxe4
        • 2.Bc6#
      • 1...Kd6
        • 2.Qxe5#
      • 1...Ke6
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);CHECK,XP(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XB(E)
    • Try
      • B(E);CHECK,XP(c)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XB(E)
  • Actual
    • Q(B);CHECK
    • Vars
      • K(b);S_FLIGHT,XQ(B)::B(D)
      • K(b);P-FLIGHT::QAB1(B),XP(c)
      • K(b);P_SPINP(c),S_FLIGHT::QAR1(B),XP(c)
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