MESON Chess Problem Database

Problem Display
PID: 132795 (4R3/2PK1R2/4N3/3k2p1/1p2N1p1/1Pn2bP1/3Pn3/B3Q3 w - - 0 1)

Brummelman, Derk Hendrikus (AKA Bruma, DH)

The Field, 1958

(First published on Thu Sep 11 1958)

4R3/2PK1R2/4N3/3k2p1/1p2N1p1/1Pn2bP1/3Pn3/B3Q3

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Sf6#
      • 2.Rf5#
    • 1...Sg1
      • 2.Sf6#
      • 2.Rf5#
    • 1...Sxg3
      • 2.Sf6#
    • 1...Sd4
      • 2.Sf6#
    • 1...Sf4
      • 2.Sf6#
      • 2.Rf5#
    • 1...Sb1
      • 2.Sf6#
    • 1...Sd1
      • 2.Sf6#
    • 1...Sa2
      • 2.Sf6#
    • 1...Sa4
      • 2.Sf6#
    • 1...Sxe4
      • 2.Rf5#
    • 1...Sb5
      • 2.Sf6#
  • Tries
    • 1.Sxc3+?
      • 1...Ke5
        • 2.d4#
      • 1...Sxc3
        • 2.Rf5#
      • 1...bxc3!
  • Keys
    • 1.Qf2!
      • 1...Kxe4
        • 2.Sf4#
      • 1...Ke5
        • 2.Sf4#
      • 1...Bxe4
        • 2.Qc5#
      • 1...Sxg3
        • 2.Qd4#
      • 1...Sxe4
        • 2.Rf5#
      • 1...Bh1
        • 2.Qf5#
      • 1...Bg2
        • 2.Qf5#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...Sb1
        • 2.Sf6#
      • 1...Sd1
        • 2.Sf6#
      • 1...Sa2
        • 2.Sf6#
      • 1...Sa4
        • 2.Sf6#
      • 1...Sb5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);XP(E)::S(F)
    • S(a);::S(F)
    • S(b);::S(F)
    • S(b);SBLOCK,XS(F)::R(J)
  • Tries
    • Try
      • S(F);CHECK,XS(b)
      • Vars
        • K(f);P-FLIGHT,P_SPINS(a)::P(C)
        • S(a);XS(F)::R(J)
      • Refutation
        • P(d);XS(F)
  • Actual
    • Q(B);
    • Vars
      • K(f);S_FLIGHT,XS(F)::R(K)+S(G)
      • K(f);P-FLIGHT,P_SPINS(b)::R(K)+S(G)
      • B(c);SBLOCK,XS(F)::QAR1(B)
      • S(a);N_GUARD,XP(E)::QAR1(B)
      • S(b);SBLOCK,XS(F)::R(J)
      • B(c);OGATE::QAR2(B)
      • S(a);N_GUARD::QAR1(B)
      • S(a);N_GUARD::QAR1(B),XS(a)
      • S(b);::S(F)
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