MESON Chess Problem Database

Problem Display
PID: 193571 (3K1Q2/2pP2pb/2P1pN2/4k1pP/2RN3n/6P1/3P4/8 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1915

3K1Q2/2pP2pb/2P1pN2/4k1pP/2RN3n/6P1/3P4/8

#2

10 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Sf3#
  • Tries
    • 1.Se2?
      • threat
        • 2.Rc5#
      • 1...Kf5
        • 2.Sg4#
      • 1...gxf6
        • 2.Qc5#
      • 1...Be4!
    • 1.Sb3?
      • threat
        • 2.Rc5#
      • 1...Kf5
        • 2.Sg4#
      • 1...gxf6
        • 2.Qc5#
      • 1...Be4!
    • 1.Sf3+?
      • 1...Kf5
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sxh7#
        • 2.Se8#
        • 2.Sg8#
        • 2.g4#
      • 1...Sxf3!
    • 1.Sb5?
      • threat
        • 2.Rc5#
      • 1...Kf5
        • 2.Sg4#
      • 1...gxf6
        • 2.Qc5#
      • 1...Be4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rc5#
      • 1...Kxf5
        • 2.Sg4#
      • 1...Bxf5
        • 2.d4#
      • 1...Sxf5
        • 2.Re4#
      • 1...exf5
        • 2.Qe7#
      • 1...gxf6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::S(D)
  • Tries
    • Try
      • S(D);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::QAR(J)+S(G)
        • P(f);SBLOCK,XS(G)::QAR2(J)
      • Refutation
        • B(g);
    • Try
      • S(D);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::QAR(J)+S(G)
        • P(f);SBLOCK,XS(G)::QAR2(J)
      • Refutation
        • B(g);
    • Try
      • S(D);CHECK
      • Refutation
        • S(a);XS(D)
    • Try
      • S(D);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::QAR(J)+S(G)
        • P(f);SBLOCK,XS(G)::QAR2(J)
      • Refutation
        • B(g);
  • Actual
    • S(D);
    • Threat
      • R(C)
    • Vars
      • K(b);P-FLIGHT,XS(D)::QAR(J)+S(G)
      • B(g);SBLOCK,XS(D)::P(A)
      • S(a);SBLOCK,XS(D)::R1(C)
      • P(d);OGATEB,SBLOCK,XS(D)::QAR2(J)
      • P(f);SBLOCK,XS(G)::QAR2(J)
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