MESON Chess Problem Database

Problem Display
PID: 252967 (K2n2q1/1p1b1pN1/1p2rNp1/nRB1k1p1/2p1p1B1/1p6/rP3QPb/8 w - - 0 1)

Eaton, Vincent Lanius

Wiener Schachzeitung, 1937

K2n2q1/1p1b1pN1/1p2rNp1/nRB1k1p1/2p1p1B1/1p6/rP3QPb/8

#2

9 + 16

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Bd4#
    • 1...Bf4
      • 2.Qd4#
    • 1...Bc8
      • 2.Ba3#
      • 2.Bb4#
      • 2.Be7#
      • 2.Bf8#
    • 1...Sac6+
      • 2.Ba3#
    • 1...Sdc6+
      • 2.Bf8#
  • Tries
    • 1.Bxb6+?
      • 1...Kd6
        • 2.Qc5#
      • 1...Bxb5!
  • Keys
    • 1.Sgh5!
      • threat
        • 2.Qd4#
      • 1...Sac6+
        • 2.Ba3#
      • 1...Sdc6+
        • 2.Bf8#
      • 1...bxc5
        • 2.Qxc5#
      • 1...gxh5
        • 2.Qf5#
      • 1...Rd6
        • 2.Bd4#
      • 1...Bg1
        • 2.Qg3#
      • 1...e3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(j);SBLOCK::R(E)+B(F),DCHECK
    • B(b);SBLOCK::QAB1(B)
    • S(f);CHECK,S_CUTB(m)::R(E)+B(F)
    • S(o);CHECK,S_CUTB(m)::R(E)+B(F)
  • Tries
    • Try
      • B(F);CHECK,XP(i)
      • Vars
        • K(g);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • B(m);XR(E)
  • Actual
    • S(H);
    • Threat
      • QAB1(B)
    • Vars
      • S(f);CHECK,S_CUTB(m)::R(E)+B(F)
      • S(o);CHECK,S_CUTB(m)::R(E)+B(F)
      • P(i);OGATE,P_SPINP(i),XB(F)::QAR2(B),XP(i)
      • P(k);N_GUARD,XS(H)::QAR1(B)
      • R(j);SBLOCK::R(E)+B(F),DCHECK
      • B(b);N_GUARD::QAB(B)
      • P(e);OGATEB::QAR2(B),XP(e)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).