MESON Chess Problem Database

Problem Display
PID: 163463 (1b6/1B1R4/3p4/2k1p3/PpN1R3/1P2p2K/1p4P1/2q2QB1 w - - 0 1)

Bijpost, M

Probleemblad, 1978

1b6/1B1R4/3p4/2k1p3/PpN1R3/1P2p2K/1p4P1/2q2QB1

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Bxe3#
    • 1...Qb1
      • 2.Bxe3#
    • 1...Qxf1
      • 2.Bxe3#
    • 1...Qc2
      • 2.Bxe3#
    • 1...Ba7
      • 2.Rc7#
    • 1...Bc7
      • 2.Rxc7#
    • 1...d5
      • 2.Rxd5#
  • Tries
    • 1.Rxe3?
      • threat
        • 2.Rxe5#
      • 1...Qxe3+
        • 2.Bxe3#
      • 1...Kd4
        • 2.Rd3#
      • 1...Qc3
        • 2.Rxc3#
      • 1...d5
        • 2.Rxd5#
      • 1...e4!
    • 1.Rxe5+?
      • 1...dxe5
        • 2.Rd5#
      • 1...d5
        • 2.Rexd5#
        • 2.Rdxd5#
      • 1...Kd4!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Qb5#
      • 1...Qxe3+
        • 2.Bxe3#
      • 1...Kb6
        • 2.Sc4#
      • 1...Qxf1
        • 2.Sxf1#
      • 1...Qc4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::B(B),XP(c)
    • Q(a);N_GUARD,P_PINP(C),XQ(A)::B(B),XP(c)
    • B(h);N_GUARD::R(J)
    • B(h);N_GUARD::R(J),XB(h)
    • P(g);OGATE::R1(J),XP(g)
  • Tries
    • Try
      • R(H);XP(c)
      • Threat
        • B(B)+R(H),DCHECK,XP(f)
      • Vars
        • Q(a);CHECK,OGATE,P_SPINQ(a),XR(H)::B(B),XQ(a)
        • K(e);P_SPINP(g),S_FLIGHT::B(B)+R(H),DCHECK
        • Q(a);N_GUARD,P_PINR(H)::B(B)+R(H),XQ(a)
        • P(g);OGATE::R1(J),XP(g)
      • Refutation
        • P(f);
    • Try
      • R(H);CHECK,XP(f)
      • Vars
        • P(g);OGATE,XR(H)::R1(J)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(G);XP(c)
    • Threat
      • QAR1(A)
    • Vars
      • Q(a);CHECK,OGATE,P_SPINQ(a),XS(G)::B(B),XQ(a)
      • K(e);S_FLIGHT::B(B)+S(G),DCHECK
      • Q(a);P_PINP(C),XQ(A)::B(B)+S(G),XQ(a)
      • Q(a);N_GUARD::B(B)+S(G),XQ(a)
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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).