MESON Chess Problem Database

Problem Display
PID: 171452 (8/2K5/2N2Q2/8/1Pk1N3/8/4R3/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1998

8/2K5/2N2Q2/8/1Pk1N3/8/4R3/8

#2

6 + 1

6490 yacpdb 2018
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qf7#
  • Tries
    • 1.Sc3?
      • 1...Kd3
        • 2.Qd4#
      • 1...Kb3!
    • 1.Sc5?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qe6#
        • 2.Qf7#
      • 1...Kb5!
    • 1.Sd6+?
      • 1...Kd3
        • 2.Qf3#
      • 1...Kd5
        • 2.Se7#
        • 2.Rd2#
        • 2.Re5#
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qg5#
        • 2.Qf3#
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qf7#
      • 1...Kb3!
    • 1.Ra2?
      • 1...Kb3
        • 2.Qe6#
        • 2.Qf7#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kb5
        • 2.Sd6#
        • 2.Qf1#
      • 1...Kd5!
    • 1.Re3?
      • 1...Kd5
        • 2.Qf7#
      • 1...Kb5!
    • 1.Qb2?
      • 1...Kd3
        • 2.Se5#
        • 2.Qc2#
      • 1...Kd5
        • 2.Qa2#
        • 2.Qb3#
      • 1...Kb5!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Sf6#
        • 2.Qb3#
      • 1...Kb5!
    • 1.Qe5?
      • 1...Kd3
        • 2.Qb5#
      • 1...Kb3!
    • 1.Qg5?
      • 1...Kd3
        • 2.Qb5#
      • 1...Kb3!
    • 1.Qf3?
      • threat
        • 2.Sd6#
      • 1...Kd5
        • 2.Sd2#
        • 2.Sd6#
        • 2.Qb3#
        • 2.Qf7#
      • 1...Kb5!
    • 1.Qf5?
      • 1...Kd3
        • 2.Qb5#
      • 1...Kb3!
  • Keys
    • 1.Qa1!
      • 1...Kb3
        • 2.Qa2#
      • 1...Kd3
        • 2.Qa6#
      • 1...Kb5
        • 2.Sd6#
      • 1...Kd5
        • 2.Qa2#

Anticipated by 226416(1984)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(E)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::QAB(E)
      • K(a);S_FLIGHT::S(C)
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