MESON Chess Problem Database

Problem Display
PID: 70229 (3K2B1/BpN1PQ2/1rR5/2r1pP2/3kp3/b2b2N1/1P1qpP2/3R1n2 w - - 0 1)

van Rede, C

2nd Prize, Good Companions (February), 1923

3K2B1/BpN1PQ2/1rR5/2r1pP2/3kp3/b2b2N1/1P1qpP2/3R1n2

#2

12 + 11

3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxe2#
    • 1...Qc3
      • 2.Sxe2#
    • 1...Qb4
      • 2.Sxe2#
    • 1...Qf4
      • 2.Sxe2#
    • 1...Qa5
      • 2.Sxe2#
    • 1...Qg5
      • 2.Sxe2#
    • 1...Qh6
      • 2.Sxe2#
    • 1...Rc1
      • 2.Qd5#
    • 1...Rc2
      • 2.Qd5#
    • 1...Rc3
      • 2.Qd5#
    • 1...Rc4
      • 2.Sb5#
      • 2.Qd5#
    • 1...Rd5+
      • 2.Qxd5#
    • 1...Rcxc6
      • 2.Qd5#
    • 1...Rb3
      • 2.Rd6#
      • 2.Qd5#
    • 1...Rb4
      • 2.Bxc5#
      • 2.Rd6#
      • 2.Qd5#
    • 1...Rb5
      • 2.Rd6#
      • 2.Qd5#
    • 1...Ra6
      • 2.Qd5#
    • 1...Rbxc6
      • 2.Qd5#
  • Tries
    • 1.Rd6+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rxd6+!
    • 1.Qc4+?
      • 1...Rxc4
        • 2.Sb5#
      • 1...Bxc4!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Se6#
      • 1...Rd5+
        • 2.Qxd5#
      • 1...Rcxc6
        • 2.Qd5#
      • 1...Rxb3
        • 2.Rd6#
      • 1...Rbxc6
        • 2.Qd5#
      • 1...Qh6
        • 2.Sxe2#
      • 1...Rc4
        • 2.Sb5#
      • 1...Bc4
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(b);N_GUARD,P_SPINB(e)::S(D),XP(c)
    • Q(b);N_GUARD,P_PINP(I),P_SPINB(e)::S(D),XP(c)
    • R(h);N_GUARD,P_SPINR(j)::QAR1(J)
    • R(h);CHECK,N_GUARD,P_SPINR(j)::QAR1(J),XR(h)
    • R(h);N_GUARD,P_SPINR(j),XR(F)::QAR1(J)
    • R(j);P_SPINR(h)::QAR1(J)
    • R(j);P_SPINR(h),XR(F)::QAR1(J)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • R(h);N_GUARD,P_PINR(F),P_SPINR(h)::QAR1(J),XR(h)
      • Refutation
        • R(j);CHECK,P_SPINR(h),XR(F)
    • Try
      • Q(J);CHECK
      • Vars
        • R(h);P_SPINR(j),XQ(J)::S(H)
      • Refutation
        • B(e);P_SPINQ(b),XQ(J)
  • Actual
    • Q(J);
    • Threat
      • S(H)
    • Vars
      • R(h);CHECK,N_GUARD,P_SPINR(j)::QAR1(J),XR(h)
      • R(h);N_GUARD,P_SPINR(j),XR(F)::QAR1(J)
      • R(j);N_GUARD,P_SPINR(h),XQ(J)::R(F)
      • R(j);P_SPINR(h),XR(F)::QAR1(J)
      • Q(b);N_GUARD,P_SPINB(e)::S(D),XP(c)
      • R(h);N_GUARD,P_SPINR(j),S_CUTB(e)::S(H)
      • B(e);P_SPINQ(b),S_CUTR(h)::QAB1(J)
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).