Problem Display
PID: 236965 (2b3B1/N1p5/1p2p3/7R/1Pk2P1R/B1p2P1K/2Q5/8 w - - 0 1)

Bruchner, Siegfried

Schweizerische Schachzeitung, 1988

2b3B1/N1p5/1p2p3/7R/1Pk2P1R/B1p2P1K/2Q5/8

#2

10 + 6


SOLUTION


  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qe4#
  • Tries
    • 1.Sc6?
      • 1...Ba6
        • 2.Bxe6#
      • 1...Bb7
        • 2.Bxe6#
      • 1...b5
        • 2.Rc5#
      • 1...Bd7!
    • 1.Bb2?
      • threat
        • 2.Qxc3#
      • 1...Kd4
        • 2.Qe4#
        • 2.Qxc3#
      • 1...Kxb4!
    • 1.Bxe6+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Bxe6+!
    • 1.Rc5+?
      • 1...Kd4
        • 2.Qe4#
        • 2.Qxc3#
      • 1...bxc5!
    • 1.Re5?
      • threat
        • 2.f5#
      • 1...Kd4
        • 2.Qe4#
      • 1...Bb7!
    • 1.Qe2+?
      • 1...Kd4
        • 2.Sb5#
        • 2.Sc6#
        • 2.Qe4#
      • 1...Kb3!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qa2#
      • 1...exd5+
        • 2.f5#
      • 1...e5+
        • 2.Rd7#
      • 1...Kxd5
        • 2.Qd3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • S(I);
      • Vars
        • B(f);N_GUARD::B(J),XP(d)
        • P(c);N_GUARD::R1(H)
      • Refutation
        • B(f);
    • Try
      • B(B);
      • Threat
        • QAR1(A),XP(a)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XP(E)
    • Try
      • B(J);CHECK,P_SPINB(J),XP(d)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • B(f);CHECK,XB(J)
    • Try
      • R(H);CHECK
      • Refutation
        • P(c);XR(H)
    • Try
      • R(H);
      • Threat
        • R(G)+P(F)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • B(f);
    • Try
      • Q(A);CHECK,N_PINP(a),P_PINP(d)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(H);
    • Threat
      • QAB(A)
    • Vars
      • P(d);CHECK,XR(H)::R(G)+P(F)
      • P(d);CHECK,OGATEB::B(J)+R(H)
      • K(b);N_SPINP(a),P_SPINP(d),S_FLIGHT,XR(H)::QAR2(A)


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).