MESON Chess Problem Database

Problem Display
PID: 202255 (6N1/8/6B1/3p4/3K2k1/8/7Q/8 w - - 0 1)

Renaud, Georges

Chess Amateur (The), 1923

6N1/8/6B1/3p4/3K2k1/8/7Q/8

#2

4 + 2

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Bh5#
    • 1...Kg5
      • 2.Qg3#
  • Tries
    • 1.Kd3?
      • 1...Kf3
        • 2.Bh5#
      • 1...Kg5
        • 2.Qg3#
      • 1...d4!
    • 1.Ke3?
      • 1...Kg5
        • 2.Qg3#
        • 2.Qh5#
      • 1...d4+!
    • 1.Kxd5?
      • 1...Kg5
        • 2.Qg3#
      • 1...Kf3!
    • 1.Sf6+?
      • 1...Kf3
        • 2.Bh5#
      • 1...Kg5!
    • 1.Sh6+?
      • 1...Kf3
        • 2.Bh5#
      • 1...Kg5!
    • 1.Se7?
      • 1...Kf3
        • 2.Bh5#
      • 1...Kg5!
    • 1.Bc2?
      • 1...Kf3
        • 2.Bd1#
      • 1...Kg5!
    • 1.Bd3?
      • 1...Kf3
        • 2.Be2#
      • 1...Kg5!
    • 1.Bh5+?
      • 1...Kf5
        • 2.Qe5#
      • 1...Kg5!
  • Keys
    • 1.Qf2!
      • 1...Kh3
        • 2.Bf5#
      • 1...Kg5
        • 2.Qg3#

Anticipated by 4544(1878)

This anticipates 22919(1966), 10900(1969), 11738(1971)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::B(C)
    • K(a);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(C)
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • K(B);S_FLIGHT
      • Refutation
        • P(b);CHECK
    • Try
      • K(B);P-FLIGHT,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::B(C)
      • K(a);P-FLIGHT::QAR2(A)
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