MESON Chess Problem Database

Problem Display
PID: 103942 (4N3/6n1/7p/4k1pN/3p2P1/3P4/B7/Q3K3 w - - 0 1)

Groeneveld, Cornelis

van Gool, Johann Christoffel

L'Italia Scacchistica, 1999

4N3/6n1/7p/4k1pN/3p2P1/3P4/B7/Q3K3

#2

7 + 5

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qc5#
        • 2.Qc7#
      • 1...Sxh5
        • 2.Qc7#
      • 1...Sxe8
        • 2.Qc5#
      • 1...Sf5
        • 2.Qc5#
      • 1...Se6!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qe2#
        • 2.Qh2#
        • 2.Qb5#
        • 2.Qb8#
      • 1...Sxh5
        • 2.Qb8#
      • 1...Sxe8
        • 2.Qh2#
      • 1...Sf5
        • 2.Qb5#
      • 1...Se6
        • 2.Qe2#

Anticipated by 104636(1978)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);XS(F)::QAB(A)
        • S(e);XS(G)::QAR2(A)
        • S(e);::QAR2(A)
      • Refutation
        • S(e);
  • Actual
    • Q(A);
    • Threat
      • DUALS(4)
    • Vars
      • S(e);XS(F)::QAB(A)
      • S(e);XS(G)::QAB(A)
      • S(e);::QAR(A)
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