MESON Chess Problem Database

Problem Display
PID: 101593 (4b3/4NPK1/2p1p3/2P1k1p1/3p2R1/3P3n/3nP3/3q4 w - - 0 1)

van Beek, Huibrecht

Good Companions (March), 1916

4b3/4NPK1/2p1p3/2P1k1p1/3p2R1/3P3n/3nP3/3q4

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Re4#
    • 1...Sf1
      • 2.Re4#
    • 1...Sb3
      • 2.Re4#
    • 1...Sf3
      • 2.Re4#
    • 1...Sc4
      • 2.Re4#
    • 1...Se4
      • 2.Rxe4#
    • 1...Sf4
      • 2.Rxg5#
  • Tries
    • 1.f8Q?
      • threat
        • 2.Qf6#
      • 1...Bf7
        • 2.Qb8#
      • 1...Se4
        • 2.Rxe4#
      • 1...Qf1!
  • Keys
    • 1.e4!
      • threat
        • 2.Sg6#
      • 1...Bxf7
        • 2.Sxc6#
      • 1...Sxe4
        • 2.Rxe4#
      • 1...dxe4 ep
        • 2.d4#
      • 1...Sf4
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(b);N_GUARD::R1(C)
    • S(b);N_GUARD::R1(C),XS(b)
    • S(c);N_GUARD,SBLOCK::R(C),XP(f)
  • Tries
    • Try
      • P(F);
      • Threat
        • QAB1(F)
      • Vars
        • B(i);OGATE::QAB(F)
        • S(b);N_GUARD::R1(C),XS(b)
      • Refutation
        • Q(a);
  • Actual
    • P(A);
    • Threat
      • S(E)
    • Vars
      • B(i);N_GUARD,XP(F)::S(E),XP(g)
      • S(b);OGATE,XP(A)::R1(C),XS(b)
      • P(d);EP,OGATE,XP(A)::P(B)
      • S(c);N_GUARD,SBLOCK::R(C),XP(f)
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