MESON Chess Problem Database

Problem Display
PID: 117556 (bRBkr3/P3p2Q/2p2PNp/qPR5/2N1Kp1r/8/3b3B/8 w - - 0 1)

Marin y Llovet, Valentin

Barcelona Ty., 1919

bRBkr3/P3p2Q/2p2PNp/qPR5/2N1Kp1r/8/3b3B/8

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf8
      • 2.Qxe7#
    • 1...Rg8
      • 2.Qxe7#
    • 1...Rh8
      • 2.Qxe7#
    • 1...f3+
      • 2.Bg4#
    • 1...exf6+
      • 2.Be6#
    • 1...e5
      • 2.Bh3#
      • 2.Bg4#
      • 2.Bf5#
      • 2.Ba6#
      • 2.Be6#
      • 2.Bb7#
      • 2.Qd7#
    • 1...e6
      • 2.Ba6#
      • 2.Bxe6#
      • 2.Bb7#
      • 2.Qd7#
  • Tries
    • 1.Rd5+?
      • 1...Kc7
        • 2.Rd7#
      • 1...cxd5+!
    • 1.fxe7+?
      • 1...Rxe7+
        • 2.Qxe7#
      • 1...Kc7!
  • Keys
    • 1.Sf8!
      • threat
        • 2.Se6#
      • 1...f3+
        • 2.Bg4#
      • 1...cxb5+
        • 2.Bb7#
      • 1...exf6+
        • 2.Be6#
      • 1...Kc7
        • 2.Se6#
      • 1...Rxf8
        • 2.Qxe7#
      • 1...e5
        • 2.Bh3#
        • 2.Bg4#
        • 2.Bf5#
        • 2.Ba6#
        • 2.Be6#
        • 2.Bb7#
        • 2.Qd7#
      • 1...e6
        • 2.Ba6#
        • 2.Bxe6#
        • 2.Bb7#
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(j);N_GUARD::QAB1(I),XP(g)
    • P(b);CHECK::R(J)+B(K)
    • P(g);CHECK,XP(F)::R(J)+B(K)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(i);P_SPINP(b),S_FLIGHT::R1(E)
      • Refutation
        • P(e);CHECK,XR(E)
    • Try
      • P(F);CHECK,P_SPINP(F),XP(g)
      • Vars
        • R(j);CHECK,OGATE,XP(F)::QAB1(I),XR(j)
      • Refutation
        • K(i);P_SPINP(b),S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • P(b);CHECK::R(J)+B(K)
      • P(e);CHECK,XP(D)::R(J)+B(K)
      • P(g);CHECK,XP(F)::R(J)+B(K)
      • K(i);P_SPINP(b),S_FLIGHT::S(G)
      • R(j);N_GUARD,XS(G)::QAB1(I),XP(g)
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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).