MESON Chess Problem Database

Problem Display
PID: 16207 (2bR4/1p1np3/1Q2Pp2/1pB2p2/2p1kp1R/3N4/B2P1P2/3N1K2 w - - 0 1)

Rosberger, Jack

StrateGems, 2000

2bR4/1p1np3/1Q2Pp2/1pB2p2/2p1kp1R/3N4/B2P1P2/3N1K2

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Rxf4#
    • 1...Kd5
      • 2.Sc3#
    • 1...Sxc5
      • 2.Rxf4#
    • 1...Se5
      • 2.Rxf4#
    • 1...Sxb6
      • 2.Rxf4#
    • 1...Sb8
      • 2.Rxf4#
    • 1...Sf8
      • 2.Rxf4#
  • Tries
    • 1.Sc3+?
      • 1...Kf3
        • 2.Se1#
        • 2.Rxf4#
      • 1...Kxd3!
    • 1.Bxc4?
      • threat
        • 2.Rxf4#
      • 1...Kf3
        • 2.Bd5#
        • 2.Rxf4#
      • 1...bxc4!
    • 1.Rxf4+?
      • 1...Kd5
        • 2.Sc3#
        • 2.Se3#
        • 2.Rd4#
      • 1...Kxd3!
    • 1.Qd6?
      • threat
        • 2.Rxf4#
      • 1...Kf3
        • 2.Rxf4#
        • 2.Qxf4#
        • 2.Qd5#
      • 1...exd6!
  • Keys
    • 1.Bb4!
      • 1...Kxd3
        • 2.Bb1#
      • 1...Kf3
        • 2.Rxf4#
      • 1...Kd5
        • 2.Sc3#
      • 1...Sxb6
        • 2.Rxf4#
      • 1...cxd3
        • 2.Qe3#
      • 1...Sc5
        • 2.Rxf4#
      • 1...Se5
        • 2.Rxf4#
        • 2.Qe3#
      • 1...Sb8
        • 2.Rxf4#
        • 2.Qe3#
      • 1...Sf8
        • 2.Rxf4#
        • 2.Qe3#
      • 1...c3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(b);N_SPINP(c),S_FLIGHT::R1(G),XP(c)
    • K(b);N_SPINP(c),P_SPINP(a),P_SPINS(h),S_FLIGHT::S(A)
    • S(h);XB(H)::R1(G),XP(c)
    • S(h);::R1(G),XP(c)
    • S(h);XQ(I)::R1(G),XP(c)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • K(b);N_SPINP(c),P_SPINS(h),S_FLIGHT,XS(F)
    • Try
      • B(C);XP(a)
      • Threat
        • R1(G),XP(c)
      • Refutation
        • P(d);XB(C)
    • Try
      • R(G);CHECK,XP(c)
      • Refutation
        • K(b);P_SPINS(h),S_FLIGHT,XS(F)
    • Try
      • Q(I);
      • Threat
        • R1(G),XP(c)
      • Refutation
        • P(i);XQ(I)
  • Actual
    • B(H);
    • Vars
      • K(b);N_SPINP(c),OGATEB,P_SPINS(h),S_FLIGHT,XS(F)::B(C)
      • K(b);N_SPINP(c),S_FLIGHT::R1(G),XP(c)
      • K(b);N_SPINP(c),P_SPINP(a),P_SPINS(h),S_FLIGHT::S(A)
      • S(h);XQ(I)::R1(G),XP(c)
      • P(a);XS(F)::QAR1(I)
      • S(h);::R1(G),XP(c)
      • P(a);::QAR1(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).