MESON Chess Problem Database

Problem Display
PID: 275117 (8/1Kp5/1bR1BN2/2p1rR2/1B1k4/1Pp1pP2/4Pn2/6Q1 w - - 0 1)

Echemendia, Luis

Garzon-60 JT (Problemas), 2023

8/1Kp5/1bR1BN2/2p1rR2/1B1k4/1Pp1pP2/4Pn2/6Q1

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Rd5#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Rxe6
      • 2.Rd5#
    • 1...Sd1
      • 2.Qxd1#
    • 1...Sh1
      • 2.Qd1#
    • 1...Sh3
      • 2.Qd1#
    • 1...Sg4
      • 2.Qd1#
    • 1...c2
      • 2.Qa1#
    • 1...cxb4
      • 2.Rc4#
    • 1...c4
      • 2.Rxc4#
  • Tries
    • 1.Rf4+?
      • 1...Se4
        • 2.Qd1#
      • 1...Re4!
    • 1.Rd6+?
      • 1...Rd5
        • 2.Rfxd5#
        • 2.Rdxd5#
      • 1...cxd6!
    • 1.Qa1?
      • threat
        • 2.Bxc3#
        • 2.Qxc3#
      • 1...cxb4
        • 2.Rc4#
      • 1...Ba5
        • 2.Qxc3#
      • 1...Sd1
        • 2.Qxd1#
      • 1...Se4!
    • 1.Qc1?
      • threat
        • 2.Bxc3#
        • 2.Qxc3#
      • 1...cxb4
        • 2.Rc4#
      • 1...Ba5
        • 2.Qxc3#
      • 1...Sd1
        • 2.Qxd1#
      • 1...c2
        • 2.Qb2#
        • 2.Qa1#
      • 1...Se4!
    • 1.Qd1+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sxd1!
    • 1.Qe1?
      • threat
        • 2.Bxc3#
        • 2.Qxc3#
      • 1...cxb4
        • 2.Rc4#
      • 1...Ba5
        • 2.Qxc3#
      • 1...Sd1
        • 2.Qxd1#
      • 1...c2
        • 2.Bc3#
        • 2.Qc3#
        • 2.Qa1#
      • 1...Se4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Bxc3#
      • 1...Rxd5
        • 2.Rxd5#
      • 1...cxb4
        • 2.Rc4#
      • 1...Ba5
        • 2.Bxc5#
      • 1...Sd1
        • 2.Qxd1#
      • 1...Se4
        • 2.Qxe3#
      • 1...c2
        • 2.Bc3#
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(f);OGATE::R1(F)
    • R(f);OGATE::R1(F),XR(f)
    • R(f);OGATE,XB(H)::R1(F)
    • S(a);N_GUARD,P_SPINP(c)::QAR(A),XS(a)
    • S(a);N_GUARD,P_SPINP(c)::QAR(A)
    • P(b);OGATEB::QAB(A)
    • P(e);OGATE,XB(E)::R1(G)
    • P(e);OGATE::R1(G),XP(e)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • S(a);P_SPINP(c),P_SPINS(a)::QAR(A)
      • Refutation
        • R(f);P_SPINR(f)
    • Try
      • R(G);CHECK
      • Refutation
        • P(h);XR(G)
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(e);OGATE,XB(E)::R1(G)
        • B(g);::QAB1(A),XP(b)
        • S(a);N_GUARD::QAR(A),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);OGATE,XB(E)::R1(G)
        • B(g);::QAB1(A),XP(b)
        • S(a);N_GUARD::QAR(A),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR1(A),XS(a)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);OGATE,XB(E)::R1(G)
        • B(g);::QAB1(A),XP(b)
        • S(a);N_GUARD::QAR(A),XS(a)
      • Refutation
        • S(a);
  • Actual
    • S(I);
    • Threat
      • B(E),XP(b)
    • Vars
      • R(f);OGATE,XS(I)::R1(F),XR(f)
      • P(e);OGATE,XB(E)::R1(G)
      • B(g);N_GUARD::B(E),XP(e)
      • S(a);N_GUARD,P_SPINP(c)::QAR(A),XS(a)
      • S(a);OGATE,P_SPINP(c)::QAB1(A),XP(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).