MESON Chess Problem Database

Problem Display
PID: 158052 (5K2/8/8/2NNkB1Q/8/2R5/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1986

5K2/8/8/2NNkB1Q/8/2R5/8/8

#2

6 + 1

15148 Sadier Collection 2016
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Sd7+?
      • 1...Kd4
        • 2.Qd1#
      • 1...Kxd5
        • 2.Qd1#
      • 1...Kd6!
    • 1.Sb4?
      • 1...Kd4
        • 2.Qh8#
      • 1...Kd6
        • 2.Qh2#
      • 1...Kf6
        • 2.Sd7#
      • 1...Kf4!
    • 1.Bb1+?
      • 1...Kd4
        • 2.Sb3#
        • 2.Se6#
      • 1...Kd6!
    • 1.Bc2+?
      • 1...Kd4
        • 2.Sb3#
        • 2.Se6#
      • 1...Kd6!
    • 1.Bd3+?
      • 1...Kd4
        • 2.Sb3#
        • 2.Se6#
        • 2.Rc4#
      • 1...Kd6!
    • 1.Bh3+?
      • 1...Kd6
        • 2.Se4#
        • 2.Sb7#
      • 1...Kd4!
    • 1.Be4+?
      • 1...Kd4
        • 2.Qh8#
      • 1...Kd6!
    • 1.Bg4+?
      • 1...Kd6
        • 2.Se4#
        • 2.Sb7#
      • 1...Kd4!
    • 1.Be6+?
      • 1...Kd4
        • 2.Qh8#
      • 1...Kd6!
    • 1.Bg6+?
      • 1...Kd4
        • 2.Sb3#
        • 2.Se6#
      • 1...Kd6!
    • 1.Bh7+?
      • 1...Kd4
        • 2.Sb3#
        • 2.Se6#
      • 1...Kd6!
    • 1.Bc8+?
      • 1...Kd6
        • 2.Se4#
        • 2.Sb7#
      • 1...Kd4!
    • 1.Qd1?
      • 1...Kxf5
        • 2.Qh5#
      • 1...Kd6!
    • 1.Qe2+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxf5
        • 2.Qh5#
      • 1...Kd6
        • 2.Qe6#
      • 1...Kxd5!
    • 1.Qf3?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kd6!
    • 1.Qf7?
      • 1...Kd6
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qe8+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxf5
        • 2.Qh5#
      • 1...Kd6
        • 2.Qe6#
      • 1...Kxd5!
    • 1.Qh1?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxf5
        • 2.Qh5#
      • 1...Kd6!
  • Keys
    • 1.Se7!
      • 1...Kd4
        • 2.Qh8#
      • 1...Kf4
        • 2.Sg6#
      • 1...Kd6
        • 2.Qh2#
      • 1...Kf6
        • 2.Sd7#

This anticipates 246652(1998)

FEATURES

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