MESON Chess Problem Database

Problem Display
PID: 158462 (2nN4/b2p3B/1p1p1PR1/3k1b1N/1K4p1/2BP1r1p/4p2Q/3R4 w - - 0 1)

Mosiashvili, Givi

2nd Prize, Probleemblad, 2015

2nN4/b2p3B/1p1p1PR1/3k1b1N/1K4p1/2BP1r1p/4p2Q/3R4

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sf4#
    • 1...Rg3
      • 2.Sf4#
    • 1...Rf4+
      • 2.Sxf4#
    • 1...Be4
      • 2.Bg8#
    • 1...exd1S
      • 2.Qa2#
    • 1...exd1R
      • 2.Qa2#
    • 1...e1Q
      • 2.Qa2#
    • 1...e1S
      • 2.Qa2#
    • 1...e1B
      • 2.Qa2#
    • 1...e1R
      • 2.Qa2#
  • Tries
    • 1.Rg5?
      • threat
        • 2.Bg8#
      • 1...Rf4+
        • 2.Sxf4#
      • 1...Rxd3
        • 2.Qh1#
      • 1...e1Q
        • 2.Qa2#
      • 1...e1R
        • 2.Qa2#
      • 1...Re3
        • 2.Sf4#
      • 1...Se7!
    • 1.Qf4?
      • threat
        • 2.Qc4#
        • 2.Qd4#
      • 1...Rxf4+
        • 2.Sxf4#
      • 1...Rxd3
        • 2.Qc4#
        • 2.Qxf5#
      • 1...Be4
        • 2.Bg8#
        • 2.Qxe4#
        • 2.dxe4#
      • 1...b5!
    • 1.Qxe2?
      • threat
        • 2.Qa2#
      • 1...Rf4+
        • 2.Sxf4#
      • 1...Rxd3
        • 2.Sf4#
      • 1...Bxd3
        • 2.Bg8#
      • 1...Rf2!
    • 1.Qg2?
      • threat
        • 2.Sf4#
      • 1...Bxd3
        • 2.Rg5#
      • 1...Be4
        • 2.Bg8#
      • 1...hxg2!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Sf4#
      • 1...Bxd3
        • 2.Rg5#
      • 1...Be4
        • 2.Bg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD::S(F)
    • R(b);CHECK,N_GUARD::S(F),XR(b)
    • B(f);N_GUARD::B(I)
    • P(a);OGATE,XR(A)::QAB(B)
    • P(a);OGATE,P_PINB(C)::QAB(B)
    • P(a);OGATE::QAB(B)
  • Tries
    • Try
      • R(H);P_PINB(f)
      • Threat
        • B(I)
      • Vars
        • R(b);CHECK,N_GUARD::S(F),XR(b)
        • R(b);OGATEB,P_SPINR(b),XP(D)::QAB(B)
        • P(a);OGATE,P_PINB(C)::QAB(B)
        • P(a);OGATE::QAB(B)
        • R(b);N_GUARD::S(F)
      • Refutation
        • S(k);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);CHECK,XQ(B)::S(F),XR(b)
      • Refutation
        • P(g);
    • Try
      • Q(B);XP(a)
      • Threat
        • QAB(B)
      • Vars
        • R(b);CHECK,N_GUARD::S(F),XR(b)
        • R(b);N_GUARD,P_SPINR(b),XP(D)::S(F)
        • B(f);N_GUARD,P_SPINB(f),XP(D)::B(I)
      • Refutation
        • R(b);
    • Try
      • Q(B);P_PINR(b)
      • Threat
        • S(F)
      • Vars
        • B(f);OGATEB,P_SPINB(f),XP(D)::R(H)
        • B(f);N_GUARD,N_SPINR(b)::B(I)
      • Refutation
        • P(c);N_SPINR(b),XQ(B)
  • Actual
    • Q(B);P_PINR(b)
    • Threat
      • S(F)
    • Vars
      • B(f);OGATEB,P_SPINB(f),XP(D)::R(H)
      • B(f);N_GUARD,N_SPINR(b)::B(I)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).