MESON Chess Problem Database

Problem Display
PID: 232736 (8/8/q2p1K2/3B3p/8/2B2Rp1/4p2p/1Q2Rbkr w - - 0 1)

Hahnel, Peter

Freie Presse, 1996

8/8/q2p1K2/3B3p/8/2B2Rp1/4p2p/1Q2Rbkr

#2

6 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g2
      • 2.Bd4#
  • Tries
    • 1.Rxe2?
      • threat
        • 2.Bd4#
        • 2.Rxf1#
        • 2.Rxg3#
        • 2.Qxf1#
      • 1...Qd3
        • 2.Rxf1#
        • 2.Qxf1#
      • 1...Qc4
        • 2.Rxf1#
        • 2.Rxg3#
        • 2.Qxf1#
      • 1...Qa1
        • 2.Rxf1#
        • 2.Rxg3#
        • 2.Qb6#
      • 1...Qa3
        • 2.Rxf1#
        • 2.Rxg3#
        • 2.Qxf1#
      • 1...Qa4
        • 2.Rxf1#
        • 2.Rxg3#
        • 2.Qxf1#
      • 1...Qb6
        • 2.Rxf1#
        • 2.Rxg3#
        • 2.Qxf1#
        • 2.Qxb6#
      • 1...Qa7
        • 2.Rxf1#
        • 2.Rxg3#
        • 2.Qxf1#
      • 1...g2
        • 2.Bd4#
      • 1...h4
        • 2.Bd4#
        • 2.Rxf1#
        • 2.Qxf1#
      • 1...Qxe2!
    • 1.Qg6?
      • threat
        • 2.Qxg3#
      • 1...Kg2
        • 2.Qxg3#
      • 1...g2
        • 2.Bd4#
      • 1...h4!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Rg2#
      • 1...Kxf2
        • 2.Bd4#
      • 1...gxf2
        • 2.Qg6#
      • 1...g2
        • 2.Rxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(f);SBLOCK::B(C)
  • Tries
    • Try
      • R(B);XP(d)
      • Threat
        • DUALS(4)
      • Vars
        • P(f);::B(C)
      • Refutation
        • Q(h);XR(B)
    • Try
      • Q(A);P_PINP(f)
      • Threat
        • QAR2(A),XP(f)
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT::QAR1(A),XP(f)
        • P(f);::B(C)
      • Refutation
        • P(g);
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • K(b);N_SPINB(a),OGATEB,S_FLIGHT,XR(D)::B(C)
      • P(f);OGATEB,SBLOCK,XR(D)::QAR(A)
      • P(f);::R1(D),XP(f)
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).