MESON Chess Problem Database

Problem Display
PID: 214777 (3NR3/2p5/2B5/BPk1r3/4Pb2/5Kp1/1N4P1/7Q w - - 0 1)

Anonymous

American Problem Association, 1878

3NR3/2p5/2B5/BPk1r3/4Pb2/5Kp1/1N4P1/7Q

#2

10 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Sb7#
  • Tries
    • 1.Se6+?
      • 1...Kd6
        • 2.Sc4#
        • 2.Bxc7#
      • 1...Rxe6!
    • 1.Rxe5+?
      • 1...Kd4
        • 2.Rd5#
      • 1...Kd6
        • 2.Sc4#
        • 2.Sf7#
      • 1...Bxe5!
    • 1.Qc1+?
      • 1...Kd4
        • 2.Qc3#
        • 2.Qc4#
      • 1...Kd6
        • 2.Sb7#
        • 2.Sf7#
      • 1...Bxc1!
    • 1.Qg1+?
      • 1...Kd6
        • 2.Sc4#
        • 2.Sb7#
        • 2.Sf7#
      • 1...Be3!
  • Keys
    • 1.Qh8!
      • 1...Kd4
        • 2.Se6#
      • 1...Kd6
        • 2.Sb7#
      • 1...Rxe4
        • 2.Sb7#
      • 1...Rxe8
        • 2.Sb7#
      • 1...Rd5
        • 2.Sb7#
      • 1...Rf5
        • 2.Sb7#
      • 1...Rg5
        • 2.Sb7#
      • 1...Rh5
        • 2.Sb7#
      • 1...Re6
        • 2.Sb7#
      • 1...Re7
        • 2.Sb7#
      • 1...Bc1
        • 2.Qxe5#
      • 1...Bd2
        • 2.Qxe5#
      • 1...Be3
        • 2.Qxe5#
      • 1...Bg5
        • 2.Qxe5#
      • 1...Bh6
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(I)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • R(d);XS(I)
    • Try
      • R(J);CHECK,XR(d)
      • Vars
        • K(c);S_FLIGHT::R1(J)
      • Refutation
        • B(b);XR(J)
    • Try
      • Q(A);CHECK
      • Refutation
        • B(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • Q(A);
    • Vars
      • K(c);P_SPINR(d),S_FLIGHT::S(I)
      • K(c);S_FLIGHT::S(I)
      • R(d);XP(E)::S(I)
      • R(d);XR(J)::S(I)
      • R(d);::S(I)
      • B(b);N_GUARD::QAR2(A),XR(d)
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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).