MESON Chess Problem Database

Problem Display
PID: 106745 (4R3/7b/2p1N3/2P1p3/1N4Q1/1P2kPP1/1K2p3/4B3 w - - 0 1)

Navon, Emanuel

2nd Comm., Subotica Internet Ty., 2009

4R3/7b/2p1N3/2P1p3/1N4Q1/1P2kPP1/1K2p3/4B3

#2

10 + 5

56 The Problemist 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxe4#
    • 1...Bg8
      • 2.Qe4#
    • 1...e4
      • 2.Qf4#
  • Tries
    • 1.Sc2+?
      • 1...Kd3
        • 2.Rd8#
        • 2.Qc4#
      • 1...Bxc2!
    • 1.Sd5+?
      • 1...Kd3
        • 2.Qc4#
      • 1...cxd5!
    • 1.Sf4?
      • threat
        • 2.Sg2#
      • 1...Kd4
        • 2.Bf2#
      • 1...e4
        • 2.Sc2#
      • 1...Be4!
    • 1.Sg5?
      • threat
        • 2.Qf4#
      • 1...Be4
        • 2.Qxe4#
      • 1...e4!
    • 1.Sc7?
      • threat
        • 2.Qf4#
      • 1...Be4
        • 2.Qxe4#
      • 1...e4!
    • 1.Sg7?
      • threat
        • 2.Qf4#
      • 1...Be4
        • 2.Qxe4#
      • 1...e4!
    • 1.Sd8?
      • threat
        • 2.Qf4#
      • 1...Be4
        • 2.Qxe4#
      • 1...e4!
    • 1.Sf8?
      • threat
        • 2.Qf4#
      • 1...Be4
        • 2.Qxe4#
      • 1...e4!
    • 1.Qf5?
      • threat
        • 2.Sc2#
      • 1...e4
        • 2.Qf4#
      • 1...Bxf5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf4#
      • 1...Be4
        • 2.Qxe4#
      • 1...e4
        • 2.Sdc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(e);N_GUARD::QAR1(G),XB(e)
    • B(e);N_GUARD::QAR1(G)
    • P(c);N_GUARD::QAB1(G)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • B(e);XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(G)
      • Refutation
        • P(d);XS(F)
    • Try
      • S(I);P_PINP(c)
      • Threat
        • S(I)
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::B(A)
        • P(c);S_CUTB(e)::S(F)
      • Refutation
        • B(e);N_SPINP(c)
    • Try
      • S(I);P_PINP(c)
      • Threat
        • QAB1(G)
      • Vars
        • B(e);N_GUARD,N_SPINP(c)::QAR1(G),XB(e)
      • Refutation
        • P(c);
    • Try
      • S(I);P_PINP(c)
      • Threat
        • QAB1(G)
      • Vars
        • B(e);N_GUARD,N_SPINP(c)::QAR1(G),XB(e)
      • Refutation
        • P(c);
    • Try
      • S(I);P_PINP(c)
      • Threat
        • QAB1(G)
      • Vars
        • B(e);N_GUARD,N_SPINP(c)::QAR1(G),XB(e)
      • Refutation
        • P(c);
    • Try
      • S(I);P_PINP(c)
      • Threat
        • QAB1(G)
      • Vars
        • B(e);N_GUARD,N_SPINP(c)::QAR1(G),XB(e)
      • Refutation
        • P(c);
    • Try
      • S(I);P_PINP(c)
      • Threat
        • QAB1(G)
      • Vars
        • B(e);N_GUARD,N_SPINP(c)::QAR1(G),XB(e)
      • Refutation
        • P(c);
    • Try
      • Q(G);
      • Threat
        • S(F)
      • Vars
        • P(c);N_GUARD::QAB1(G)
      • Refutation
        • B(e);XQ(G)
  • Actual
    • S(I);P_PINP(c)
    • Threat
      • QAB1(G)
    • Vars
      • B(e);N_GUARD,N_SPINP(c)::QAR1(G),XB(e)
      • P(c);S_CUTB(e)::S(I)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).