MESON Chess Problem Database

Problem Display
PID: 171432 (5Q2/8/2k5/2NN1K2/R7/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1998

5Q2/8/2k5/2NN1K2/R7/8/8/8

#2

5 + 1

3713 Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • 1...Kb5
        • 2.Qe8#
      • 1...Kxd5
        • 2.Qc5#
      • 1...Kb7
        • 2.Qa8#
      • 1...Kd7!
    • 1.Se4?
      • 1...Kb5
        • 2.Qe8#
      • 1...Kxd5
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qa8#
      • 1...Kb7
        • 2.Qa8#
      • 1...Kd7!
    • 1.Sa6?
      • 1...Kb5
        • 2.Qe8#
      • 1...Kxd5
        • 2.Qc5#
      • 1...Kd7
        • 2.Sb8#
      • 1...Kb7!
    • 1.Se6?
      • 1...Kb5
        • 2.Qe8#
      • 1...Kxd5
        • 2.Qc5#
      • 1...Kb7
        • 2.Qa8#
      • 1...Kd7!
    • 1.Sb7?
      • 1...Kb5
        • 2.Qe8#
      • 1...Kxd5
        • 2.Qc5#
        • 2.Qd6#
      • 1...Kxb7
        • 2.Qa8#
      • 1...Kd7!
    • 1.Sc3?
      • 1...Kb6
        • 2.Qd6#
      • 1...Kc7!
    • 1.Sc7?
      • 1...Kb6
        • 2.Qd6#
      • 1...Kxc7!
    • 1.Qd6+?
      • 1...Kb5
        • 2.Sc3#
        • 2.Sc7#
        • 2.Qb6#
      • 1...Kxd6!
    • 1.Qd8?
      • 1...Kb5
        • 2.Qb6#
      • 1...Kxc5!
  • Keys
    • 1.Sd3!
      • 1...Kb5
        • 2.Qe8#
      • 1...Kxd5
        • 2.Qc5#
      • 1...Kb7
        • 2.Qa8#
      • 1...Kd7
        • 2.Se5#

Anticipated by 22148(1960)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);S_FLIGHT,XS(C)::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);S_FLIGHT,XS(C)::QAR1(E)
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);S_FLIGHT,XS(C)::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XS(B)
  • Actual
    • S(B);
    • Vars
      • K(a);S_FLIGHT::QAB(E)
      • K(a);S_FLIGHT,XS(C)::QAR1(E)
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::S(B)
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