MESON Chess Problem Database

Problem Display
PID: 196454 (8/6p1/2p3K1/n2k1N2/B3NP2/1P6/6Q1/8 w - - 0 1)

Vandemeulebroucke, Ignaas

Suomen Shakki, 1984

8/6p1/2p3K1/n2k1N2/B3NP2/1P6/6Q1/8

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Sc5#
    • 1...Sxb3
      • 2.Bxb3#
    • 1...c5
      • 2.Sg5#
  • Tries
    • 1.Sf6+?
      • 1...Ke6
        • 2.Qe4#
        • 2.Qe2#
      • 1...Kc5!
    • 1.Qd2+?
      • 1...Ke6
        • 2.Sc5#
        • 2.Sg5#
        • 2.Qd6#
      • 1...Kxe4!
  • Keys
    • 1.Qe2!
      • 1...Ke6
        • 2.Sf6#
      • 1...Sxb3
        • 2.Bxb3#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb7
        • 2.Qc4#
      • 1...c5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(D)
    • S(a);OGATE,XP(B)::B(C),XS(a)
    • P(c);SBLOCK::QAB(A)+S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(D)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAR(A)+S(D)
      • S(a);OGATE,XP(B)::B(C),XS(a)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(a);N_GUARD::QAB1(A)
      • P(c);SBLOCK::S(D)
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