MESON Chess Problem Database

Problem Display
PID: 171464 (N7/8/8/3pQ3/K1k2N2/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Tsorichnik, 1999

N7/8/8/3pQ3/K1k2N2/8/8/8

#2

4 + 2

6490 yacpdb 2018
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qxd5#
    • 1...d4
      • 2.Qc7#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qc3#
        • 2.Qd4#
      • 1...Kc5
        • 2.Qc7#
      • 1...d4
        • 2.Qxd4#
        • 2.Qb5#
      • 1...Kd3!
    • 1.Se6?
      • threat
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...Kd3!
    • 1.Qa1?
      • 1...d4
        • 2.Qc1#
      • 1...Kc5!
    • 1.Qf6?
      • 1...d4
        • 2.Qc6#
      • 1...Kc5!
    • 1.Qg7?
      • 1...d4
        • 2.Qc7#
      • 1...Kc5!
    • 1.Qh8?
      • 1...d4
        • 2.Qc8#
      • 1...Kc5!
  • Keys
    • 1.Qe3!
      • 1...d4
        • 2.Qc1#

Anticipated by 241926(1933)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR1(C),XP(b)
    • P(b);SBLOCK::QAR(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • P(b);::QAR1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);SBLOCK::QAR(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);SBLOCK::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);SBLOCK::QAR(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);SBLOCK::QAR(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • P(b);SBLOCK::QAR(C)
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