MESON Chess Problem Database

Problem Display
PID: 166960 (8/8/8/4p3/2pN4/K2k4/5QB1/8 w - - 0 1)

Romanovskis, Vladimirs

Sachmatija, 2010

8/8/8/4p3/2pN4/K2k4/5QB1/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qe3#
  • Tries
    • 1.Sb5?
      • 1...e4
        • 2.Bf1#
      • 1...c3!
    • 1.Bf1+?
      • 1...Kc3
        • 2.Sb5#
        • 2.Qe3#
        • 2.Qb2#
      • 1...Ke4!
    • 1.Be4+?
      • 1...Kc3
        • 2.Sb5#
        • 2.Qe3#
        • 2.Qb2#
      • 1...Kxe4!
    • 1.Qe2+?
      • 1...Kc3
        • 2.Sb5#
        • 2.Qe3#
      • 1...Kxd4!
  • Keys
    • 1.Sf3!
      • 1...Kc3
        • 2.Qd2#
      • 1...Ke4
        • 2.Se1#
      • 1...c3
        • 2.Sxe5#
      • 1...e4
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • S(D);
      • Vars
        • P(c);SBLOCK::B(B)
      • Refutation
        • P(b);
    • Try
      • B(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XB(B)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(D)
  • Actual
    • S(D);
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::B(B)+S(D)
      • P(b);SBLOCK::S(D),XP(c)
      • P(c);SBLOCK::QAR1(A)
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