MESON Chess Problem Database

Problem Display
PID: 280755 (8/R7/2p1p2K/2p1k3/2P1P3/1QR5/6BN/8 w - - 0 1)

Echemendia, Luis

Zaragoza-65 JT (Problemas), 2025

8/R7/2p1p2K/2p1k3/2P1P3/1QR5/6BN/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qb8#
    • 1...Kf6
      • 2.Sg4#
  • Tries
    • 1.Kg5?
      • 1...Kd6
        • 2.Qb8#
      • 1...Kd4!
    • 1.Sg4+?
      • 1...Kd4
        • 2.Rd3#
        • 2.Rd7#
      • 1...Kd6
        • 2.Rd3#
        • 2.Qd1#
        • 2.Qb8#
        • 2.e5#
      • 1...Kf4!
    • 1.Rc1?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qb8#
      • 1...Kf6
        • 2.Sg4#
      • 1...Kf4!
    • 1.Rc2?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qb8#
      • 1...Kf6
        • 2.Sg4#
      • 1...Kf4!
    • 1.Rd3?
      • 1...Kf6
        • 2.Sg4#
      • 1...Kf4!
    • 1.Re3?
      • 1...Kd4
        • 2.Sf3#
        • 2.Qc3#
      • 1...Kd6
        • 2.Qb8#
        • 2.e5#
      • 1...Kf6
        • 2.Sg4#
      • 1...Kf4!
    • 1.Rf3?
      • 1...Kxe4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qb8#
      • 1...Kd4!
    • 1.Rg3?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qb8#
      • 1...Kf6
        • 2.Sg4#
      • 1...Kf4!
    • 1.Rd7?
      • 1...Kf6
        • 2.Sg4#
      • 1...Kf4!
    • 1.Rf7?
      • 1...Kd6
        • 2.Qb8#
      • 1...Kd4!
    • 1.Qd1?
      • 1...Kf6
        • 2.Sg4#
      • 1...Kf4!
    • 1.Qb8+?
      • 1...Kf6
        • 2.Sg4#
        • 2.Rf3#
        • 2.Qf4#
        • 2.Qh8#
      • 1...Kd4!
  • Keys
    • 1.Rh3!
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6
        • 2.Qb8#
      • 1...Kf6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::QAB(C)
    • K(b);N_GUARD,S_FLIGHT::S(B)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(C)
        • K(b);N_GUARD,S_FLIGHT::QAB(C)
        • K(b);N_GUARD,S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(C)
        • K(b);N_GUARD,S_FLIGHT::QAB(C)
        • K(b);N_GUARD,S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(F)::QAR1(C)
        • K(b);N_GUARD,S_FLIGHT::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(C)
        • K(b);N_GUARD,S_FLIGHT::QAB(C)
        • K(b);N_GUARD,S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(H);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(H);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAB1(C)
      • K(b);N_GUARD,S_FLIGHT::QAB(C)
      • K(b);N_GUARD,S_FLIGHT::S(B)
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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).