MESON Chess Problem Database

Problem Display
PID: 72735 (4R3/4r1r1/K4B2/1NpP3N/pR1qkPP1/1QPb1pP1/1p1P1b2/1B6 w - - 0 1)

Verhoef, J

Tijdschrift vd KNSB, 1936

4R3/4r1r1/K4B2/1NpP3N/pR1qkPP1/1QPb1pP1/1p1P1b2/1B6

#2

14 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rxe5#
    • 1...Re6+
      • 2.Rxe6#
    • 1...Rg6
      • 2.Rxe7#
    • 1...Rg8
      • 2.Rxe7#
    • 1...Bc2
      • 2.Bxc2#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Sd6#
        • 2.Bxd3#
      • 1...Re6+
        • 2.Sd6#
        • 2.Rxe6#
      • 1...Bxb1
        • 2.Sd6#
      • 1...Bc2
        • 2.Sd6#
        • 2.Bxc2#
      • 1...Qxc4!
    • 1.cxd4?
      • threat
        • 2.Bxd3#
      • 1...Re6+
        • 2.Rxe6#
      • 1...Bxb1
        • 2.Sd6#
      • 1...c4
        • 2.Sc3#
      • 1...Bc2
        • 2.Sd6#
        • 2.Bxc2#
      • 1...axb3!
  • Keys
    • 1.c4!
      • threat
        • 2.Sd6#
      • 1...Qxf6+
        • 2.Sxf6#
      • 1...Qxc4
        • 2.Qxd3#
      • 1...Qxd5
        • 2.Sc3#
      • 1...Qe5
        • 2.Bxd3#
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(i);OGATE::R1(N),XR(i)
    • R(i);CHECK,OGATE::R(N),XR(i)
    • R(j);N_GUARD,P_PINB(M)::R(N),XR(i)
    • R(j);N_GUARD::R(N),XR(i)
    • B(c);N_PINS(I),OGATEB::B(A),XB(c)
  • Tries
    • Try
      • Q(C);N_SPINS(I)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);N_SPINB(c),XB(A)::S(I)
      • Refutation
        • Q(f);P_PINS(I),XQ(C)
    • Try
      • P(D);XQ(f)
      • Threat
        • B(A),XB(c)
      • Vars
        • R(i);CHECK,OGATE::R(N),XR(i)
        • B(c);N_PINS(I),N_SPINB(c),XB(A)::S(I)
        • P(h);N_PINS(I)::S(I)
      • Refutation
        • P(e);XQ(C)
  • Actual
    • P(D);N_PINQ(f),N_SPINS(I)
    • Threat
      • S(I)
    • Vars
      • Q(f);CHECK,XB(M)::S(K),XQ(f)
      • Q(f);N_GUARD,P_PINS(I),P_SPINQ(f),XP(D)::QAB1(C),XB(c)
      • Q(f);N_GUARD,XP(J)::S(I)
HTML5 logo

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).