MESON Chess Problem Database

Problem Display
PID: 41899 (8/2N3B1/P7/p1kP4/p4P2/K7/8/7Q w - - 0 1)

Maximov, Nikolai J

Schweizerische Schachzeitung, 1902

8/2N3B1/P7/p1kP4/p4P2/K7/8/7Q

#2

7 + 3

3360 Simple Two-move Themes 1924
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Be5?
      • 1...Kb6
        • 2.Qg1#
      • 1...Kc4!
    • 1.Qb1?
      • 1...Kc4
        • 2.Qc2#
        • 2.Qb5#
      • 1...Kd6!
    • 1.Qc1+?
      • 1...Kb6
        • 2.Bd4#
      • 1...Kd6!
    • 1.Qg1+?
      • 1...Kc4
        • 2.Qd4#
      • 1...Kd6!
    • 1.d6?
      • 1...Kc4
        • 2.Qd5#
      • 1...Kb6
        • 2.Bd4#
      • 1...Kxd6!
  • Keys
    • 1.Qh7!
      • 1...Kc4
        • 2.Qc2#
      • 1...Kb6
        • 2.Bd4#
      • 1...Kd6
        • 2.Bf8#

Anticipated by 214711(1877), 222395(1883)

This anticipates 152959(2001)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::B(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(D);
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
        • K(c);S_FLIGHT::B(G)
      • Refutation
        • K(c);S_FLIGHT,XP(D)
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT::QAR2(A)
      • K(c);S_FLIGHT::B(G)
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