MESON Chess Problem Database

Problem Display
PID: 160657 (5Q2/8/5P2/8/8/3N3K/2P1k3/5N2 w - - 0 1)

Akimov, Nikolai Nikolaevich

Sachsische Zeitung, 2014

5Q2/8/5P2/8/8/3N3K/2P1k3/5N2

#2

6 + 1

9939 64 Shakhmatnoe obozrenie 2015
15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qc5?
      • 1...Kxf1
        • 2.Qf2#
      • 1...Kf3
        • 2.Qe3#
      • 1...Kd1!
    • 1.Qh6?
      • 1...Kd1
        • 2.Qd2#
      • 1...Kf3
        • 2.Qe3#
      • 1...Kxf1!
    • 1.Qe7+?
      • 1...Kxf1
        • 2.Qe1#
      • 1...Kf3
        • 2.Sd2#
        • 2.Sh2#
        • 2.Qe3#
      • 1...Kd1!
    • 1.Qg7?
      • 1...Kxf1
        • 2.Qg2#
      • 1...Kf3
        • 2.Qg2#
        • 2.Qg4#
      • 1...Kd1!
    • 1.Qa8?
      • 1...Kxf1
        • 2.Qg2#
      • 1...Kd1!
    • 1.Qe8+?
      • 1...Kxf1
        • 2.Qe1#
      • 1...Kf3
        • 2.Sd2#
        • 2.Sh2#
        • 2.Qe3#
      • 1...Kd1!
    • 1.Qg8?
      • 1...Kxf1
        • 2.Qg2#
      • 1...Kf3
        • 2.Qg2#
        • 2.Qg4#
      • 1...Kd1!
  • Keys
    • 1.Qb4!
      • 1...Kd1
        • 2.Qd2#
      • 1...Kxf1
        • 2.Qe1#
      • 1...Kf3
        • 2.Qg4#

This is a version of 234981

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XS(A)::QAR1(F)
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XS(A)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(A)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XS(A)::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XS(A)::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(A)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XS(A)::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAR1(F)
      • K(a);S_FLIGHT,XS(A)::QAR1(F)
      • K(a);S_FLIGHT::QAB1(F)
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