MESON Chess Problem Database

Problem Display
PID: 171371 (8/8/8/8/kp6/1N1Q4/p7/K7 w - - 0 1)

Antipov, Viacheslav Pavlovich

Temp-64 (Nikolaev), 1995

8/8/8/8/kp6/1N1Q4/p7/K7

#2

3 + 3

6490 yacpdb 2018
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qa6#
      • 1...Ka5
        • 2.Qb5#
      • 1...b3!
    • 1.Qc2?
      • 1...Ka3
        • 2.Qxa2#
      • 1...Kb5!
    • 1.Qe2?
      • 1...Ka3
        • 2.Qxa2#
      • 1...Kxb3!
  • Keys
    • 1.Sc5+!
      • 1...Ka5
        • 2.Qa6#

Anticipated by 167307(1886), 39648(1933)

FEATURES

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