MESON Chess Problem Database

Problem Display
PID: 169269 (7Q/8/8/8/7K/R2N4/4N1k1/8 w - - 0 1)

Turevski, Dmitri Evgenevich

4/5 Place, SuperProblem 190. TT, 2017

7Q/8/8/8/7K/R2N4/4N1k1/8

#2

5 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kh1
      • 2.Kg3#
  • Tries
    • 1.Qa1?
      • 1...Kh2
        • 2.Qg1#
      • 1...Kf3!
    • 1.Qh5?
      • 1...Kf1
        • 2.Qf3#
      • 1...Kh1
        • 2.Kg3#
      • 1...Kh2!
    • 1.Qa8+?
      • 1...Kf1
        • 2.Qf3#
      • 1...Kh2!
  • Keys
    • 1.Qd4!
      • 1...Kf1
        • 2.Qf2#
      • 1...Kh1
        • 2.Qg1#
      • 1...Kh2
        • 2.Qg1#
      • 1...Kf3
        • 2.Sdf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR(E)+K(D)
  • Tries
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
        • K(a);S_FLIGHT::QAR(E)+K(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);P-FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::R(B)+S(C)
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