MESON Chess Problem Database

Problem Display
PID: 208947 (3RQ2B/2r4n/8/2pPPb2/1p2kNp1/1N1ppRK1/B5P1/8 w - - 0 1)

Ferreau, Wilhelm

Deutsche Schachblatter, 1937

3RQ2B/2r4n/8/2pPPb2/1p2kNp1/1N1ppRK1/B5P1/8

#2

11 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.Qxg6#
    • 1...d2
      • 2.Bb1#
    • 1...gxf3
      • 2.gxf3#
  • Tries
    • 1.Se2?
      • threat
        • 2.Rf4#
      • 1...dxe2
        • 2.Bb1#
      • 1...gxf3
        • 2.gxf3#
      • 1...Rd7
        • 2.Sxc5#
      • 1...d2
        • 2.Bb1#
      • 1...Bd7!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rf4#
      • 1...gxf3
        • 2.gxf3#
      • 1...Rd7
        • 2.Sbxc5#
      • 1...Rg7
        • 2.Sexc5#
      • 1...Sf6
        • 2.Sg5#
      • 1...d2
        • 2.Bb1#
      • 1...e2
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(g);OGATEB::QAB(J),XB(g)
    • P(a);OGATEB::B(A)
    • P(e);OGATE,XR(D)::P(B),XP(e)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(D)
      • Vars
        • P(a);OGATEB,XS(F)::B(A)
        • P(e);OGATE,XR(D)::P(B),XP(e)
        • R(h);N_GUARD::S(C),XP(f)
        • P(a);OGATEB::B(A)
      • Refutation
        • B(g);
  • Actual
    • S(F);
    • Threat
      • R1(D)
    • Vars
      • P(e);OGATE,XR(D)::P(B),XP(e)
      • R(h);N_GUARD::S(C),XP(f)
      • R(h);N_GUARD::S(F),XP(f)
      • S(i);N_GUARD::S(F)
      • P(a);OGATEB::B(A)
      • P(b);N_GUARD::S(C)
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