MESON Chess Problem Database

Problem Display
PID: 54086 (3bR3/3pq3/8/2NQ1p2/K1N4B/p7/r3pRP1/3Bk3 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1943

3bR3/3pq3/8/2NQ1p2/K1N4B/p7/r3pRP1/3Bk3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qd2#
    • 1...Rd2
      • 2.Qxd2#
    • 1...exd1S
      • 2.Sd3#
  • Tries
    • 1.Rxe7?
      • threat
        • 2.Rf3#
        • 2.Rf4#
        • 2.Rxf5#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Bc7
        • 2.Rf4#
      • 1...f4
        • 2.Rf3#
        • 2.Rxf4#
      • 1...Bxe7!
    • 1.Qf3?
      • threat
        • 2.Rf1#
      • 1...exd1Q+
        • 2.Rc2#
      • 1...exd1B+
        • 2.Rc2#
      • 1...Kxd1!
  • Keys
    • 1.Qxf5!
      • threat
        • 2.Rf1#
      • 1...exd1Q+
        • 2.Rc2#
      • 1...exd1B+
        • 2.Rc2#
      • 1...Kxd1
        • 2.Qb1#
      • 1...exd1S
        • 2.Sd3#
      • 1...exd1R
        • 2.Rxa2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::QAB1(H)
    • R(b);N_GUARD::QAB1(H),XR(b)
    • P(c);P_SPINQ(g),SBLOCK,XB(A)::S(G)
  • Tries
    • Try
      • R(I);P_PINP(c),XQ(g)
      • Threat
        • DUALS(3)
      • Vars
        • R(b);N_GUARD::QAB1(H),XR(b)
        • B(h);::B(F)+R(B)
      • Refutation
        • B(h);N_SPINP(c),XR(I)
    • Try
      • Q(H);
      • Threat
        • B(F)+R(B),DCHECK
      • Vars
        • P(c);CHECK,OGATE,P_SPINQ(g),XB(A)::B(F)+R(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(c),XB(A)
  • Actual
    • Q(H);XP(e)
    • Threat
      • B(F)+R(B),DCHECK
    • Vars
      • P(c);CHECK,OGATE,P_SPINQ(g),SBLOCK,XB(A)::B(F)+R(B)
      • K(a);OGATEB,P-FLIGHT,XB(A)::QAR2(H)
      • P(c);P_SPINQ(g),SBLOCK,XB(A)::S(G)
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).