MESON Chess Problem Database

Problem Display
PID: 201334 (4Rq2/3pbnp1/3R4/1npN2p1/4k1B1/1P1NP2p/3Q3K/8 w - - 0 1)

Candela Sanz, Rafael

Il Due Mosse, 1954

4Rq2/3pbnp1/3R4/1npN2p1/4k1B1/1P1NP2p/3Q3K/8

#2

9 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sd4
      • 2.Sc3#
    • 1...Sbxd6
      • 2.Sc3#
    • 1...Sa7
      • 2.Sc3#
    • 1...Sc7
      • 2.Sc3#
    • 1...Se5
      • 2.Sxc5#
    • 1...g6
      • 2.Sf6#
  • Tries
    • 1.Bf3+?
      • 1...Kf5
        • 2.e4#
      • 1...Kxf3!
    • 1.Bf5+?
      • 1...Kf3
        • 2.Se1#
        • 2.Qd1#
        • 2.Qf2#
      • 1...Kxf5!
    • 1.Re6+?
      • 1...Kxd5
        • 2.Sb4#
        • 2.Sf4#
      • 1...Se5
        • 2.Rxe5#
      • 1...dxe6!
    • 1.Rxe7+?
      • 1...Se5
        • 2.Sxc5#
        • 2.Rxe5#
      • 1...Qxe7!
    • 1.Qg2+?
      • 1...Kxd3
        • 2.Bf5#
      • 1...hxg2!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Bf3#
      • 1...Kxd5
        • 2.Bf3#
      • 1...gxf6
        • 2.Sxf6#
      • 1...Sd4
        • 2.Sc3#
      • 1...Se5
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(c);N_GUARD::S(G)
    • S(c);N_GUARD::S(G),XS(c)
    • S(c);N_GUARD,XR(H)::S(G)
    • S(h);N_SPINB(g),SBLOCK::S(D),XP(d)
    • P(i);N_GUARD::S(G)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(b);N_SPINB(g),OGATE,S_FLIGHT::P(E)
      • Refutation
        • K(b);N_SPINB(g),S_FLIGHT,XB(F)
    • Try
      • B(F);CHECK
      • Refutation
        • K(b);N_SPINB(g),S_FLIGHT,XB(F)
    • Try
      • R(H);CHECK,N_PINB(g)
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::R1(H),XS(h)
      • Refutation
        • P(f);XR(H)
    • Try
      • R(I);CHECK,XB(g)
      • Refutation
        • Q(j);XR(I)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_SPINB(g),S_FLIGHT,XS(D)::B(F)
      • Refutation
        • P(a);XQ(A)
  • Actual
    • R(H);
    • Threat
      • B(F)
    • Vars
      • K(b);N_SPINB(g),S_FLIGHT,XS(G)::B(F)
      • P(i);XR(H)::S(G),XP(i)
      • S(c);N_GUARD::S(G)
      • S(h);N_SPINB(g),SBLOCK::S(D)
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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).