MESON Chess Problem Database

Problem Display
PID: 228139 (8/1p6/1p6/nKp5/8/ppQ5/kPP5/3RN3 w - - 0 1)

Zujevas, Nikolajus

Sachmatija, 2020

8/1p6/1p6/nKp5/8/ppQ5/kPP5/3RN3

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Qxb3#
    • 1...Sc6
      • 2.Qxb3#
    • 1...bxc2
      • 2.Qxa3#
  • Tries
    • 1.bxa3?
      • threat
        • 2.Ra1#
        • 2.Qa1#
      • 1...Kxa3
        • 2.Ra1#
        • 2.Qa1#
      • 1...bxc2
        • 2.Ra1#
      • 1...b2!
  • Keys
    • 1.Sd3!
      • 1...axb2
        • 2.Qxb2#
      • 1...bxc2
        • 2.Qxa3#
      • 1...c4
        • 2.Sb4#
      • 1...Sc4
        • 2.Qxb3#
      • 1...Sc6
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::QAB1(E),XP(c)
    • P(c);OGATE,XP(D)::QAR1(E),XP(b)
  • Tries
    • Try
      • P(C);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(D)::R1(A)
      • Refutation
        • P(c);
  • Actual
    • S(B);
    • Vars
      • P(b);OGATE,XP(C)::QAR1(E),XP(b)
      • P(c);OGATE,XP(D)::QAR1(E),XP(b)
      • P(e);N_GUARD::S(B)
      • S(d);N_GUARD::QAB1(E),XP(c)
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