MESON Chess Problem Database

Problem Display
PID: 43481 (5r2/3pRn2/3bpR1p/2p5/N1B1k3/K1Pq1n2/3PN2B/5Q2 w - - 0 1)

Monteiro da Silveira, Jose Luis

Recomm., BCF 039. Ty., 1941-1942

5r2/3pRn2/3bpR1p/2p5/N1B1k3/K1Pq1n2/3PN2B/5Q2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qxb1#
      • 2.Qxf3#
    • 1...Qc2
      • 2.Qxf3#
    • 1...Qxe2
      • 2.Qxe2#
    • 1...Qxc4
      • 2.Qxf3#
    • 1...Qxd2
      • 2.Qxf3#
    • 1...Qxc3+
      • 2.Saxc3#
    • 1...Qd4
      • 2.Qxf3#
    • 1...Qd5
      • 2.Qxf3#
    • 1...Be5
      • 2.Sxc5#
    • 1...Bc7
      • 2.Sxc5#
    • 1...Bb8
      • 2.Sxc5#
    • 1...Se1
      • 2.Qf5#
    • 1...Sg1
      • 2.Qf5#
    • 1...Sxh2
      • 2.Qf5#
    • 1...S3e5
      • 2.Rf4#
      • 2.Qf4#
    • 1...S3g5
      • 2.Qf5#
    • 1...S7e5
      • 2.Sg3#
    • 1...e5
      • 2.Sg3#
      • 2.Rf4#
  • Tries
    • 1.Bxd3+?
      • 1...Kd5
        • 2.Qxf3#
      • 1...Kxd3!
    • 1.Bd5+?
      • 1...Qxd5
        • 2.Qxf3#
      • 1...Kxd5!
    • 1.Rexe6+?
      • 1...Be5
        • 2.Sg3#
        • 2.Sxc5#
        • 2.Rf4#
      • 1...S3e5
        • 2.Rf4#
        • 2.Qf4#
        • 2.Qf5#
      • 1...S7e5
        • 2.Sg3#
      • 1...dxe6!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qf5#
      • 1...Qxc3+
        • 2.Saxc3#
      • 1...Qxd2
        • 2.Qxf3#
      • 1...Bxe7
        • 2.Qg4#
      • 1...Sxd2
        • 2.Qxd3#
      • 1...Qd5
        • 2.Qxf3#
      • 1...Be5
        • 2.Sxc5#
      • 1...Sd4
        • 2.Qxd3#
      • 1...Sh4
        • 2.Qxd3#
      • 1...S3e5
        • 2.Rf4#
      • 1...S7e5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 10
  • Sets
    • Q(a);N_GUARD,N_PINP(F)::QAB1(A),XS(b)
    • Q(a);N_PINP(F),OGATE,XS(C)::QAR2(A),XQ(a)
    • Q(a);N_GUARD,N_PINP(F),XB(H)::QAB1(A),XS(b)
    • Q(a);N_GUARD,N_PINP(F),XP(B)::QAB1(A),XS(b)
    • Q(a);CHECK,XP(F)::S(G),XQ(a)
    • B(e);N_GUARD,N_SPINP(f)::S(G),XP(d)
    • B(e);N_GUARD::S(G),XP(d)
    • S(b);OGATE::QAB1(A)
    • S(b);OGATE,XB(D)::QAB1(A)
    • S(i);N_SPINP(f),SBLOCK,S_CUTB(e)::S(C)
  • Tries
    • Try
      • B(H);CHECK,N_SPINP(F),XQ(a)
      • Vars
        • K(c);N_SPINP(f),S_FLIGHT::QAB(A),XS(b)
      • Refutation
        • K(c);N_SPINP(f),S_FLIGHT,XB(H)
    • Try
      • B(H);CHECK
      • Vars
        • Q(a);N_PINP(F),SBLOCK,XB(H)::QAB1(A),XS(b)
      • Refutation
        • K(c);N_SPINP(f),S_FLIGHT,XB(H)
    • Try
      • R(J);CHECK,XP(f)
      • Vars
        • S(i);P_SPINS(i)::S(C)
      • Refutation
        • P(h);XR(J)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • Q(a);CHECK,XP(F)::S(G),XQ(a)
      • Q(a);N_GUARD,N_PINP(F),XP(B)::QAB1(A),XS(b)
      • B(e);N_GUARD,N_SPINP(f),XR(J)::QAR2(A)
      • S(b);OGATE,XP(B)::QAB1(A),XQ(a)
      • Q(a);N_GUARD,N_PINP(F)::QAB1(A),XS(b)
      • B(e);N_GUARD,N_SPINP(f)::S(G),XP(d)
      • S(b);OGATE::QAB1(A),XQ(a)
      • S(b);N_SPINP(f),SBLOCK,S_CUTB(e)::R1(I)
      • S(i);N_SPINP(f),SBLOCK,S_CUTB(e)::S(C)
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).