MESON Chess Problem Database

Problem Display
PID: 132361 (8/3b2b1/4pQ2/2p1nP1p/R1Pk4/Np1P2Bp/1P3P1q/K2R4 w - - 0 1)

Parrinello, Mario

Scacchi e Scienze Applicate, 1992

8/3b2b1/4pQ2/2p1nP1p/R1Pk4/Np1P2Bp/1P3P1q/K2R4

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Bxe5#
    • 1...Qh1
      • 2.Bxe5#
    • 1...Qxf2
      • 2.Bxf2#
    • 1...Qg2
      • 2.Bxe5#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Bc8
      • 2.Sb5#
    • 1...Bh6
      • 2.Qxe5#
    • 1...Bf8
      • 2.Qxe5#
    • 1...exf5
      • 2.Qd6#
  • Tries
    • 1.Ra6?
      • threat
        • 2.Rd6#
      • 1...Qxf2
        • 2.Bxf2#
      • 1...Qh1
        • 2.Bxe5#
      • 1...Qg2
        • 2.Bxe5#
      • 1...Bf8
        • 2.Qxe5#
      • 1...Bc6!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Sb5#
      • 1...Qxf2
        • 2.Bxf2#
      • 1...Sxd3
        • 2.Qh4#
      • 1...Sxc4
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD,P_PINR(B)::B(G),XS(f)
    • Q(a);OGATE,XP(D)::B(G),XQ(a)
    • Q(a);N_GUARD::B(G),XS(f)
    • B(i);N_GUARD::S(E),XB(i)
    • B(i);N_GUARD::S(E)
    • B(j);N_GUARD::QAB1(K),XS(f)
    • P(h);OGATE,XP(J)::QAR2(K)
  • Tries
    • Try
      • R(H);
      • Threat
        • R(H)
      • Vars
        • Q(a);OGATE,XP(D)::B(G),XQ(a)
        • Q(a);N_GUARD,P_PINR(B)::B(G),XS(f)
        • Q(a);N_GUARD::B(G),XS(f)
        • B(j);N_GUARD::QAB1(K),XS(f)
      • Refutation
        • B(i);
  • Actual
    • Q(K);N_PINS(f),P_PINB(i)
    • Threat
      • S(E)
    • Vars
      • Q(a);OGATE,XP(D)::B(G),XQ(a)
      • S(f);N_GUARD,P_SPINS(f),XP(F)::QAR(K)
      • S(f);N_GUARD,P_SPINS(f),XP(I)::QAR(K),XB(i)
HTML5 logo

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).