MESON Chess Problem Database

Problem Display
PID: 212658 (r7/Qp2rbB1/p1RPP1p1/1R1B2k1/2K1P1P1/1p3pPP/1p6/n2n4 w - - 0 1)

Reinhofer, Erwin

Badische Neueste Nachrichten, 1983

r7/Qp2rbB1/p1RPP1p1/1R1B2k1/2K1P1P1/1p3pPP/1p6/n2n4

#2

12 + 12

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qe3#
    • 1...Sc3
      • 2.Qe3#
    • 1...Se3+
      • 2.Qxe3#
    • 1...bxc6
      • 2.Qxe7#
    • 1...b6
      • 2.Qxe7#
  • Tries
    • 1.Bh6+?
      • 1...Kf6
        • 2.Qd4#
      • 1...Kxh6!
  • Keys
    • 1.Rxa6!
      • threat
        • 2.Bc6#
        • 2.Bxb7#
      • 1...Rc7+
        • 2.Bc6#
      • 1...Rc8+
        • 2.Bc6#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Rxe6
        • 2.Bxe6#
      • 1...Bxe6
        • 2.Bxe6#
      • 1...bxa6
        • 2.Qxe7#
      • 1...Be8
        • 2.Bc6#
      • 1...Sc3
        • 2.Qe3#
      • 1...b6
        • 2.Bc6#
        • 2.Bb7#
        • 2.Bxa8#
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::QAB(K)
    • S(b);CHECK,N_GUARD::QAB(K),XS(b)
    • P(i);OGATE,XR(H)::QAB(K),XR(j)
    • P(i);OGATE::QAB(K),XR(j)
  • Tries
    • Try
      • B(L);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(K)
      • Refutation
        • K(f);S_FLIGHT,XB(L)
  • Actual
    • R(H);XP(g)
    • Threat
      • DUALS(2)
    • Vars
      • R(j);CHECK::R(F)+B(G)
      • R(l);CHECK::R(F)+B(G)
      • S(b);CHECK,N_GUARD::QAB(K),XS(b)
      • R(j);OGATE,XP(J)::R(F)+B(G),XR(j)
      • B(k);OGATE,P_PINB(G),XP(J)::R(F)+B(G),XB(k)
      • P(i);OGATE,XR(H)::QAB(K),XR(j)
      • B(k);::R(F)+B(G)
      • S(b);N_GUARD::QAB(K)
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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).