MESON Chess Problem Database

Problem Display
PID: 262750 (8/2K2N1B/1QNP4/8/1pkp4/2p2bR1/p1p1p3/1r1r4 w - - 0 1)

Kratschmer, Ralf

Comm., SuperProblem, 2013

8/2K2N1B/1QNP4/8/1pkp4/2p2bR1/p1p1p3/1r1r4

#2

7 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qxb4#
    • 1...Bd5
      • 2.Sa5#
  • Tries
    • 1.Sfe5+?
      • 1...Kb3
        • 2.Qxb4#
      • 1...Kd5!
    • 1.Qc5+?
      • 1...Kb3
        • 2.Qxb4#
      • 1...Kxc5!
    • 1.Qb5+?
      • 1...Kb3
        • 2.Qxb4#
      • 1...Kxb5!
  • Keys
    • 1.Bg8!
      • threat
        • 2.Sfe5#
      • 1...Kb3
        • 2.Qxb4#
      • 1...Kd3
        • 2.Qxd4#
      • 1...Kd5
        • 2.Sg5#
      • 1...Bd5
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(i);N_GUARD,P_SPINP(h),S_CUTR(a),S_FLIGHT::QAR1(B),XP(h)
    • B(g);SBLOCK::S(C)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(i);N_GUARD,P_SPINP(h),S_FLIGHT::QAR1(B),XP(h)
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(i);N_GUARD,S_CUTR(a),S_FLIGHT::QAR1(B),XP(h)
      • Refutation
        • K(i);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(i);N_GUARD,P_SPINP(h),S_CUTR(a),S_FLIGHT::QAR1(B),XP(h)
      • Refutation
        • K(i);S_FLIGHT,XQ(B)
  • Actual
    • B(G);
    • Threat
      • B(G)+S(F),DCHECK
    • Vars
      • K(i);N_GUARD,P_SPINP(h),S_CUTR(a),S_FLIGHT::QAR1(B),XP(h)
      • K(i);N_GUARD,P_SPINB(g),S_CUTR(b),S_FLIGHT::QAR1(B),XP(j)
      • K(i);N_GUARD,S_CUTB(g),S_FLIGHT::B(G)+S(F)
      • B(g);SBLOCK::S(C)
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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).