MESON Chess Problem Database

Problem Display
PID: 179128 (2K5/1pN5/bB2N2Q/3pp2p/3nk1qR/4n1P1/2P1B1P1/8 w - - 0 1)

Eerkes, Allard Pieter

Arbeidermagasinet, 1937

2K5/1pN5/bB2N2Q/3pp2p/3nk1qR/4n1P1/2P1B1P1/8

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Bxd3#
    • 1...Sc4
      • 2.Bd3#
    • 1...Sef5
      • 2.Sc5#
    • 1...Sb5
      • 2.Bd3#
    • 1...Sdf5
      • 2.Sg5#
      • 2.Bf3#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Sd6#
        • 2.Bd3#
      • 1...Kf5
        • 2.Sd6#
      • 1...Sexc2
        • 2.Sd6#
      • 1...Sxg2
        • 2.Sd6#
      • 1...Sdxc2
        • 2.Sd6#
      • 1...Sxe2
        • 2.Sd6#
      • 1...Sxb5
        • 2.Bd3#
      • 1...Sc4
        • 2.Bd3#
      • 1...Sef5
        • 2.Sc3#
        • 2.Sc5#
        • 2.Bd3#
      • 1...Sdf5
        • 2.Sc3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Bd3#
        • 2.Bf3#
      • 1...Bxb5!
    • 1.Qg6+?
      • 1...Sdf5
        • 2.Sg5#
        • 2.Bf3#
      • 1...Sef5!
    • 1.Qh7+?
      • 1...Sdf5
        • 2.Sg5#
        • 2.Bf3#
      • 1...Sef5!
  • Keys
    • 1.Se8!
      • threat
        • 2.Sd6#
      • 1...Kf5
        • 2.Sd6#
      • 1...Sc4
        • 2.Bd3#
      • 1...Sef5
        • 2.Sc5#
        • 2.Sf6#
      • 1...Sb5
        • 2.Bd3#
      • 1...Sdf5
        • 2.Sg5#
        • 2.Sf6#
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(h);N_GUARD::B(B),XB(h)
    • S(a);S_CUTB(h)::B(B)
    • S(a);N_PINS(G),SBLOCK::S(G)
    • S(b);S_CUTB(h)::B(B)
  • Tries
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);N_PINS(G),N_SPINQ(d),S_FLIGHT::S(I)
        • S(a);XP(A)::S(I)
        • S(a);XP(C)::S(I)
        • S(b);XP(A)::S(I)
        • S(b);XB(B)::S(I)
        • S(b);XS(I)::B(B)
        • S(a);::B(B)
      • Refutation
        • B(h);XS(I)
    • Try
      • Q(H);CHECK
      • Refutation
        • S(a);N_PINS(G),P_SPINS(a)
    • Try
      • Q(H);CHECK
      • Refutation
        • S(a);N_PINS(G),P_SPINS(a)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • K(c);N_PINS(G),N_SPINQ(d),S_FLIGHT::S(I)
      • S(a);S_CUTB(h)::B(B)
      • S(b);S_CUTB(h)::B(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).