MESON Chess Problem Database

Problem Display
PID: 9875 (4b2B/3Rn3/Kp3r1N/1Qp1k1Np/1b3p2/p4p2/r3q3/4R3 w - - 0 1)

ten Cate, Pieter

3rd Prize, Havel MT, 1960-1961

4b2B/3Rn3/Kp3r1N/1Qp1k1Np/1b3p2/p4p2/r3q3/4R3

#2

7 + 13

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rxe4#
  • Tries
    • 1.Sxf3+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Ke6!
    • 1.Sgf7+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Ke6
        • 2.Rd6#
      • 1...Bxf7!
    • 1.Qc4?
      • threat
        • 2.Sxf3#
      • 1...b5+
        • 2.Qe6#
      • 1...Bxd7
        • 2.Sgf7#
      • 1...Sd5
        • 2.Rxd5#
      • 1...f2
        • 2.Sf3#
      • 1...Bxe1!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Rxe7#
      • 1...b5+
        • 2.Qd6#
      • 1...Bxd7
        • 2.Shf7#
      • 1...Bf7
        • 2.Shxf7#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sf5
        • 2.Rd5#
      • 1...Sc6
        • 2.Rd5#
      • 1...Sg6
        • 2.Rd5#
      • 1...Sc8
        • 2.Rd5#
      • 1...Sg8
        • 2.Rd5#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_PINQ(B),OGATE::R1(A),XQ(b)
  • Tries
    • Try
      • S(C);CHECK,XP(d)
      • Vars
        • K(h);N_SPINP(g),N_SPINR(k),P-FLIGHT::QAB1(B)
      • Refutation
        • K(h);N_SPINP(g),N_SPINR(k),P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(h);N_SPINP(g),N_SPINR(k),P-FLIGHT::QAB1(B)
        • K(h);N_SPINP(g),N_SPINR(k),P-FLIGHT::R1(F)
      • Refutation
        • B(m);XS(C)
    • Try
      • Q(B);N_PINP(g)
      • Threat
        • S(C),XP(d)
      • Vars
        • P(j);CHECK,N_PINQ(B)::QAR1(B)
        • B(m);N_GUARD,XR(F)::S(C)
        • S(l);N_GUARD::R1(F),XS(l)
        • P(d);::S(C)
      • Refutation
        • B(e);N_SPINQ(b),XR(A)
  • Actual
    • Q(B);N_PINP(g)
    • Threat
      • R(F),XS(l)
    • Vars
      • P(j);CHECK,N_PINQ(B)::QAB1(B)
      • B(m);N_GUARD,XR(F)::S(E)
      • B(m);N_GUARD::S(E),XB(m)
      • S(l);N_GUARD::R1(F),XS(l)
      • S(l);N_GUARD::R1(F)
      • P(g);N_PINQ(B)::QAB1(B)
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).