MESON Chess Problem Database

Problem Display
PID: 115228 (3r3B/P3pqR1/1NR2b2/K1pPkpp1/8/Q1P2PP1/b7/3rN3 w - - 0 1)

Bosma, Rinke

Boletim da UBP, 1992

3r3B/P3pqR1/1NR2b2/K1pPkpp1/8/Q1P2PP1/b7/3rN3

#2

12 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Re6#
      • 2.Rxe7#
    • 1...Qe6
      • 2.Rxe6#
    • 1...Qg6
      • 2.Re6#
      • 2.Rxe7#
    • 1...Qe8
      • 2.Re6#
    • 1...Qxg7
      • 2.Re6#
    • 1...Qf8
      • 2.Re6#
    • 1...Ra1
      • 2.Sd3#
    • 1...Rb1
      • 2.Sd3#
    • 1...Rc1
      • 2.Sd3#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rb8
      • 2.axb8Q#
      • 2.axb8B#
    • 1...f4
      • 2.Rxg5#
  • Tries
    • 1.Sc4+?
      • 1...Kxd5
        • 2.Qxc5#
      • 1...Bxc4!
    • 1.Sd7+?
      • 1...Kxd5
        • 2.Qxc5#
      • 1...Rxd7!
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Qe3#
      • 1...Qxd5
        • 2.Rxe7#
      • 1...Rxe1
        • 2.Qd4#
      • 1...R1xd5
        • 2.Sd3#
      • 1...R8xd5
        • 2.Sd7#
      • 1...Bxd5
        • 2.Sc4#
      • 1...f4
        • 2.Rxg5#
      • 1...Rd3
        • 2.Sxd3#
      • 1...Rd4
        • 2.Qxd4#
        • 2.cxd4#
      • 1...Bb1
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • Q(i);N_GUARD::R1(I),XQ(i)
    • Q(i);N_GUARD::R1(I)
    • Q(i);N_GUARD,XR(K)::R1(I)
    • R(a);N_GUARD::S(A)
    • R(a);N_GUARD::S(A),XR(a)
    • R(j);OGATE::PXR(j)=Q
    • P(e);OGATEB::R(K),XP(f)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(G)::QAR1(B),XP(c)
      • Refutation
        • B(b);XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(G)::QAR1(B),XP(c)
      • Refutation
        • R(j);XS(H)
  • Actual
    • Q(B);XP(c)
    • Threat
      • QAR2(B)
    • Vars
      • Q(i);OGATE,P_PINQ(B),P_SPINQ(i),XP(G)::R(K),XP(h)
      • R(a);N_GUARD,XS(A)::QAB1(B)
      • R(a);N_GUARD,P_PINQ(B),P_SPINR(a),XP(G)::S(A)
      • R(j);N_GUARD,P_PINQ(B),P_SPINR(j),XP(G)::S(H)
      • B(b);N_GUARD,P_SPINB(b),XP(G)::S(H)
      • P(e);OGATEB::R(K),XP(f)
      • R(a);N_GUARD::S(A),XR(a)
      • B(b);N_GUARD::S(H)
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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).