MESON Chess Problem Database

Problem Display
PID: 35815 (3N4/P2p2P1/1P3P2/K2k4/4N3/1p4Rp/1P3R1Q/3B2B1 w - - 0 1)

Machler, Emil

Sp. Comm., Neue Zurcher Zeitung, 1991-1992

3N4/P2p2P1/1P3P2/K2k4/4N3/1p4Rp/1P3R1Q/3B2B1

#2

13 + 4

3454 kunstschach (1987-1996) (Hoffmann) 2001
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2?
      • 1...Kd4
        • 2.Rf5#
      • 1...Ke5
        • 2.Rd3#
      • 1...Kd6
        • 2.Rg5#
      • 1...d6
        • 2.Rf5#
      • 1...Kc5!
    • 1.Re2?
      • 1...Kc4
        • 2.Bxb3#
      • 1...Ke5
        • 2.Rg5#
      • 1...d6!
    • 1.Rf4?
      • 1...Kc4
        • 2.Sc3#
        • 2.Bxb3#
      • 1...Ke5
        • 2.Rg5#
      • 1...d6!
    • 1.Rf5+?
      • 1...Kc4
        • 2.Sd2#
        • 2.Sd6#
        • 2.Be2#
        • 2.Bxb3#
        • 2.Rc3#
        • 2.Rc5#
        • 2.Qe2#
      • 1...Kxe4!
  • Keys
    • 1.Sd6!
      • 1...Kd4
        • 2.Rf5#
      • 1...Kc5
        • 2.Rd2#
      • 1...Ke5
        • 2.Rd3#
      • 1...Kxd6
        • 2.Rg5#

Anticipated by 79724(1922), 77081(1948), 216138(1980), 7474(1990)

This anticipates 108119(1998), 96631(2005)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Vars
        • K(c);P-FLIGHT::B(B)+R(D)
        • K(c);P-FLIGHT::QAB(E)+R(F)
        • P(d);SBLOCK::R(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(D);
      • Vars
        • K(c);S_FLIGHT::B(A),XP(a)
        • K(c);P-FLIGHT::QAB(E)+R(F),DCHECK
      • Refutation
        • P(d);
    • Try
      • R(D);
      • Vars
        • K(c);P-FLIGHT::R(F)
      • Refutation
        • P(d);
    • Try
      • R(D);CHECK
      • Refutation
        • K(c);S_FLIGHT,XS(G)
  • Actual
    • S(G);
    • Vars
      • K(c);P-FLIGHT::B(B)+R(D)
      • K(c);P-FLIGHT::QAB(E)+R(F)
      • K(c);P-FLIGHT,XS(G)::QAB(E)+R(F)
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