MESON Chess Problem Database

Problem Display
PID: 191258 (1Q5b/Nn6/3q4/P1RB2P1/3kP1p1/P2N2P1/5PK1/6B1 w - - 0 1)

van Engelen, Adrianus Cornelis

Tijdschrift vd Noord-Brabantse Schaakbond, 1931

1Q5b/Nn6/3q4/P1RB2P1/3kP1p1/P2N2P1/5PK1/6B1

#2

13 + 5

102 Probleemblad 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Se1?
      • threat
        • 2.f4#
      • 1...Qxg3+
        • 2.fxg3#
      • 1...Ke5
        • 2.Sc6#
      • 1...Qxc5
        • 2.Qxh8#
      • 1...Qxd5
        • 2.f3#
      • 1...Sxc5
        • 2.Qb2#
      • 1...Qf4
        • 2.Rc4#
      • 1...Kxc5!
  • Keys
    • 1.Sc1!
      • threat
        • 2.f4#
      • 1...Qxg3+
        • 2.fxg3#
      • 1...Kxc5
        • 2.Sb3#
      • 1...Ke5
        • 2.Sc6#
      • 1...Qxc5
        • 2.Qxh8#
      • 1...Qxd5
        • 2.f3#
      • 1...Sxc5
        • 2.Qb2#
      • 1...Qf4
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • B(A)+P(B)
      • Vars
        • Q(c);CHECK,OGATE,XP(F)::B(A)+P(B),XQ(c)
        • K(a);P_SPINQ(c),S_FLIGHT::S(L)
        • Q(c);N_GUARD,SBLOCK,XR(I)::QAB(M),XB(e)
        • Q(c);P_PINP(G),XB(J)::B(A)+P(B)
        • S(d);OGATE,SBLOCK,XR(I)::QAB(M)
        • Q(c);::R1(I)
      • Refutation
        • K(a);S_FLIGHT,XR(I)
  • Actual
    • S(E);
    • Threat
      • B(A)+P(B)
    • Vars
      • Q(c);CHECK,OGATE,XP(F)::B(A)+P(B),XQ(c)
      • K(a);S_FLIGHT,XR(I)::S(E)
      • K(a);P_SPINQ(c),S_FLIGHT::S(L)
      • Q(c);N_GUARD,SBLOCK,XR(I)::QAB(M),XB(e)
      • Q(c);P_PINP(G),XB(J)::B(A)+P(B)
      • S(d);OGATE,SBLOCK,XR(I)::QAB(M)
      • Q(c);::R1(I)
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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).