MESON Chess Problem Database

Problem Display
PID: 206698 (8/8/8/5p1Q/5B2/6K1/8/4k3 w - - 0 1)

de Savignac Castelet, G Arnaud

La Strategie, 1925

8/8/8/5p1Q/5B2/6K1/8/4k3

#2

3 + 2

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf1
      • 2.Qd1#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Qh1#
      • 1...Kf1
        • 2.Qh1#
      • 1...Kd1!
    • 1.Bc1?
      • 1...Kf1
        • 2.Qd1#
      • 1...f4+!
    • 1.Bd2+?
      • 1...Kf1
        • 2.Qd1#
      • 1...Kxd2!
    • 1.Be3?
      • 1...Kf1
        • 2.Qd1#
      • 1...f4+!
    • 1.Bg5?
      • 1...Kf1
        • 2.Qd1#
      • 1...f4+!
    • 1.Bh6?
      • 1...Kf1
        • 2.Qd1#
      • 1...f4+!
    • 1.Qg4?
      • 1...Kf1
        • 2.Qd1#
      • 1...fxg4!
  • Keys
    • 1.Qh2!
      • 1...Kd1
        • 2.Qd2#
      • 1...Kf1
        • 2.Qf2#

This anticipates 227651(1926), 77626(1947), 211353(1986)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);CHECK
    • Try
      • B(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT,XB(B)
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);CHECK
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);CHECK
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
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