MESON Chess Problem Database

Problem Display
PID: 198295 (6BB/3p4/3p2N1/8/1Pprk2K/2P1b3/1P1pR1N1/3R3Q w - - 0 1)

Weiss, Berthold

Rivista del Club Argentino de Ajedrez, 1920

6BB/3p4/3p2N1/8/1Pprk2K/2P1b3/1P1pR1N1/3R3Q

#2

11 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3+
      • 2.S2f4#
    • 1...Rd3
      • 2.Sxe3#
  • Tries
    • 1.Kg4?
      • threat
        • 2.Se1#
        • 2.S2f4#
        • 2.Rxe3#
      • 1...Rd3
        • 2.Se1#
        • 2.Sxe3#
        • 2.S2f4#
        • 2.S2h4#
      • 1...Kd3+!
    • 1.Rf1?
      • threat
        • 2.Se1#
        • 2.Rxe3#
      • 1...d1S
        • 2.Se1#
      • 1...Rd3
        • 2.Se1#
        • 2.Sxe3#
        • 2.Rf4#
      • 1...Kd3+!
    • 1.Qf1?
      • threat
        • 2.Rxe3#
      • 1...Rd3
        • 2.Qf4#
      • 1...Kd3+!
    • 1.Qh3?
      • threat
        • 2.Rxe3#
      • 1...Rd3
        • 2.Qg4#
      • 1...Kd3+!
  • Keys
    • 1.Bh7!
      • 1...Kd3+
        • 2.S6f4#
      • 1...Kf3+
        • 2.S2f4#
      • 1...Kd5+
        • 2.S2f4#
      • 1...Kf5+
        • 2.S6f4#
      • 1...Rd3
        • 2.Sxe3#
      • 1...Rd5
        • 2.Se5#
      • 1...d5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(e);CHECK,N_SPINB(b),S_FLIGHT::QAB(B)+S(E)
    • R(d);SBLOCK::QAB(B)+S(E),XB(b)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • DUALS(3)
      • Refutation
        • K(e);CHECK,N_SPINB(b),P_SPINP(a),S_FLIGHT
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAB(B)+S(E)
      • Refutation
        • K(e);CHECK,N_SPINB(b),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • R1(D),XB(b)
      • Vars
        • R(d);SBLOCK::QAR1(B)
      • Refutation
        • K(e);CHECK,N_SPINB(b),P_SPINP(a),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • R1(D),XB(b)
      • Vars
        • R(d);SBLOCK::QAR2(B)
      • Refutation
        • K(e);CHECK,P_SPINP(a),S_FLIGHT
  • Actual
    • B(J);
    • Vars
      • K(e);CHECK,N_SPINB(b),P_SPINP(a),S_FLIGHT::B(J)+S(I),DCHECK
      • K(e);CHECK,N_SPINB(b),S_FLIGHT::QAB(B)+S(E)
      • K(e);CHECK,N_SPINB(b),S_FLIGHT::QAB(B)+S(E),DCHECK
      • K(e);CHECK,N_SPINB(b),S_FLIGHT::B(J)+S(I)
      • R(d);SBLOCK::QAB(B)+S(E),XB(b)
      • R(d);SBLOCK::B(J)+S(I)
      • P(f);SBLOCK::B(J)+S(I)
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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).