MESON Chess Problem Database

Problem Display
PID: 203233 (2Q3K1/6B1/3k4/2p4N/2P5/8/8/8 w - - 0 1)

Lester, William Edward

Chess Amateur (The), 1924

2Q3K1/6B1/3k4/2p4N/2P5/8/8/8

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke7
      • 2.Bf8#
  • Tries
    • 1.Sf6?
      • 1...Ke7
        • 2.Qd7#
      • 1...Ke5!
    • 1.Bd4?
      • 1...Ke7
        • 2.Bxc5#
      • 1...cxd4!
    • 1.Bh6?
      • 1...Ke7
        • 2.Bf8#
      • 1...Ke5!
    • 1.Qc6+?
      • 1...Ke7
        • 2.Bf6#
      • 1...Kxc6!
  • Keys
    • 1.Sg3!
      • 1...Ke7
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(C)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);S_FLIGHT::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(b);S_FLIGHT::B(C),XP(a)
      • Refutation
        • P(a);XB(C)
    • Try
      • B(C);
      • Vars
        • K(b);S_FLIGHT::B(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::B(C)
      • Refutation
        • K(b);P-FLIGHT,XQ(D)
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::S(B)
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