MESON Chess Problem Database

Problem Display
PID: 264914 (8/4K3/B1p5/3N4/3k4/8/6Q1/2B5 w - - 0 1)

Gorbatenko, Yuri Grigorevich

1st HM., Astafyeva-30 JT (Lightweights) (Kudesnik), 2021

8/4K3/B1p5/3N4/3k4/8/6Q1/2B5

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Be3#
    • 1...c5
      • 2.Bb2#
  • Tries
    • 1.Ke6?
      • threat
        • 2.Be3#
      • 1...Kc5
        • 2.Be3#
        • 2.Qg1#
        • 2.Qf2#
      • 1...cxd5!
    • 1.Sc3?
      • 1...Kxc3
        • 2.Qb2#
      • 1...Ke5
        • 2.Qe4#
      • 1...c5
        • 2.Qg7#
      • 1...Kc5!
    • 1.Sf6?
      • 1...Kc3
        • 2.Qb2#
      • 1...Ke5
        • 2.Qe4#
      • 1...c5
        • 2.Qb2#
      • 1...Kc5!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Ba3#
        • 2.Be3#
        • 2.Qc4#
      • 1...Kxe4!
  • Keys
    • 1.Qf3!
      • 1...Kc5
        • 2.Be3#
      • 1...Ke5
        • 2.Bb2#
      • 1...cxd5
        • 2.Qe3#
      • 1...c5
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::B(A)
    • P(b);SBLOCK::B(A)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • B(A)
      • Refutation
        • P(b);XS(C)
    • Try
      • S(C);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
        • P(b);SBLOCK::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
        • P(b);SBLOCK::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::B(A)
      • P(b);SBLOCK,XS(C)::QAB1(B)
      • P(b);SBLOCK::B(A)
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