MESON Chess Problem Database

Problem Display
PID: 132970 (8/8/4n3/3N1N2/4p3/8/4k3/2Q3K1 w - - 0 1)

Amirov, Talip Khasanovich

Deutsche Schachzeitung, 1978

8/8/4n3/3N1N2/4p3/8/4k3/2Q3K1

#2

4 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qd1#
  • Tries
    • 1.Sfe3?
      • threat
        • 2.Qd1#
      • 1...Kd3
        • 2.Qd1#
      • 1...Kf3!
    • 1.Sg3+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kf3!
    • 1.Sd4+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Sxd4!
    • 1.Qd2+?
      • 1...Kf3
        • 2.Qd1#
        • 2.Qg2#
      • 1...Kxd2!
    • 1.Qc2+?
      • 1...Kf3
        • 2.Qd1#
        • 2.Qg2#
      • 1...Ke1!
  • Keys
    • 1.Sde3!
      • threat
        • 2.Qd1#
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf3
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • S(c);XS(D)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAR2(A)
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