MESON Chess Problem Database

Problem Display
PID: 11592 (1Q6/B6B/2P2b2/2Pp4/3knnKR/1P3Rp1/2P1pr2/1b1Nr3 w - - 0 1)

Eerkes, Allard Pieter

Prize, Tijdschrift vd KNSB 15. TT, 1939

1Q6/B6B/2P2b2/2Pp4/3knnKR/1P3Rp1/2P1pr2/1b1Nr3

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qb4#
    • 1...Sd2
      • 2.c3#
    • 1...Sxc5
      • 2.Qxf4#
      • 2.c3#
    • 1...Sg5
      • 2.c3#
    • 1...Sg2
      • 2.Rd3#
    • 1...Sd3
      • 2.Rxd3#
    • 1...Sh3
      • 2.Rd3#
    • 1...Sh5
      • 2.Rd3#
    • 1...Se6
      • 2.Rd3#
    • 1...Sg6
      • 2.Rd3#
  • Tries
    • 1.Rh5?
      • threat
        • 2.Qb4#
      • 1...Sxh5
        • 2.Rd3#
      • 1...Sd2
        • 2.c3#
      • 1...Sg5
        • 2.c3#
      • 1...Sd6
        • 2.c3#
        • 2.cxd6#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Bg5!
  • Keys
    • 1.Kf5!
      • threat
        • 2.Qb4#
      • 1...Sd6+
        • 2.cxd6#
      • 1...Sd2
        • 2.Rd3#
      • 1...Sd3
        • 2.c3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • B(j);SBLOCK::QAR2(K)
    • S(g);N_GUARD::P(B)
    • S(h);N_GUARD::R1(D)
    • S(h);N_GUARD::R1(D),XS(h)
  • Tries
    • Try
      • R(F);
      • Threat
        • QAR2(K)
      • Vars
        • S(h);N_GUARD,XR(F)::R1(D)
        • S(g);N_GUARD::P(B)
        • S(h);N_GUARD::R1(D),XS(h)
      • Refutation
        • B(j);
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • QAR2(K)
    • Vars
      • S(g);CHECK,OGATE,P_PINP(B),P_SPINS(h)::B(I)+P(G),XS(g)
      • S(g);P_PINP(B),P_SPINS(h)::R1(D)
      • S(h);P_PINR(D),P_SPINS(g)::P(B)
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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).