MESON Chess Problem Database

Problem Display
PID: 12115 (8/8/r3qBBP/1p1p1R2/n1r1kPK1/2p2N2/n3bPQN/8 w - - 0 1)

Haring, Jacobus

AVRO, 1975

8/8/r3qBBP/1p1p1R2/n1r1kPK1/2p2N2/n3bPQN/8

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5+
      • 2.Bxf5#
    • 1...Qf7
      • 2.Re5#
    • 1...Qg8
      • 2.Re5#
    • 1...Qe5
      • 2.Rxe5#
    • 1...Qb6
      • 2.Re5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Qc6
      • 2.Re5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Qd6
      • 2.Re5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Qxf6
      • 2.Re5#
      • 2.Rxf6#
    • 1...Qe7
      • 2.Re5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Qe8
      • 2.Re5#
    • 1...Bd3
      • 2.Se1#
      • 2.Sg1#
      • 2.Sd2#
      • 2.Sd4#
      • 2.Sh4#
      • 2.Sg5#
    • 1...Bxf3+
      • 2.Qxf3#
  • Tries
    • 1.Kg3?
      • threat
        • 2.Re5#
      • 1...Kd3
        • 2.Rxd5#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Qxf5!
  • Keys
    • 1.Kg5!
      • threat
        • 2.Re5#
      • 1...Qxf5+
        • 2.Bxf5#
      • 1...Qxf6+
        • 2.Rxf6#
      • 1...Kd3
        • 2.Rxd5#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...Qe5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(j);CHECK,OGATE,P_SPINQ(j),XR(G)::B(I),XQ(j)
    • Q(j);N_PINR(G)::B(I)+R(G),DCHECK
    • Q(j);N_PINR(G),P_PINB(I)::B(I)+R(G),DCHECK
    • Q(j);N_PINR(G)::B(I)+R(G),DCHECK,XQ(j)
    • B(b);CHECK,OGATE,P_SPINB(b),XS(D)::QAB1(B),XB(b)
  • Tries
    • Try
      • K(F);N_SPINR(G),N_SPINS(D),P-FLIGHT
      • Threat
        • B(I)+R(G),DCHECK
      • Vars
        • K(f);S_FLIGHT::B(I)+R(G),DCHECK,XP(h)
        • B(b);OGATE,P_SPINB(b),XS(D)::QAB1(B),XB(b)
        • Q(j);P_PINP(E)::B(I)+R(G),DCHECK,XQ(j)
      • Refutation
        • Q(j);P_SPINQ(j),XR(G)
  • Actual
    • K(F);N_SPINR(G),N_SPINS(D),P-FLIGHT
    • Threat
      • B(I)+R(G),DCHECK
    • Vars
      • Q(j);CHECK,OGATE,P_SPINQ(j),XR(G)::B(I),XQ(j)
      • Q(j);CHECK,OGATE,XB(H)::B(I)+R(G),XQ(j)
      • K(f);S_FLIGHT::B(I)+R(G),DCHECK,XP(h)
      • B(b);OGATE,P_SPINB(b),XS(D)::QAB1(B),XB(b)
      • Q(j);P_PINR(G)::B(I)+R(G),DCHECK,XQ(j)
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).