MESON Chess Problem Database

Problem Display
PID: 169989 (1r1n4/5p2/2Ppb1r1/Q2R4/1p2kp1N/1K1R2q1/2P3P1/1n3N2 w - - 0 1)

Salamanca, Tomas

Enroque!!, 1947

1r1n4/5p2/2Ppb1r1/Q2R4/1p2kp1N/1K1R2q1/2P3P1/1n3N2

#2

9 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Rd4#
    • 1...Qh2
      • 2.Rd4#
    • 1...Qxh4
      • 2.Rd4#
    • 1...Qxg2
      • 2.Rd4#
    • 1...Qxd3+
      • 2.cxd3#
    • 1...Qf3
      • 2.gxf3#
    • 1...Qg4
      • 2.Rd4#
    • 1...Qg5
      • 2.Rd4#
    • 1...Ra8
      • 2.Qxb4#
    • 1...Rc8
      • 2.Qxb4#
    • 1...Bh3
      • 2.Rd4#
    • 1...Bg4
      • 2.Rd4#
    • 1...Bxd5+
      • 2.Qxd5#
    • 1...Bf5
      • 2.Rd4#
    • 1...Bd7
      • 2.Rd4#
    • 1...Bc8
      • 2.Rd4#
    • 1...Sd2+
      • 2.Sxd2#
    • 1...Sa3
      • 2.Sd2#
    • 1...Sc3
      • 2.Sd2#
      • 2.Rd4#
    • 1...Sb7
      • 2.Qxb4#
    • 1...f3
      • 2.Rd4#
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sxd6#
      • 1...Qxd3+
        • 2.cxd3#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Sd2+
        • 2.Sxd2#
      • 1...Bxf5
        • 2.Rd4#
      • 1...f3
        • 2.Rd4#
      • 1...Bd7
        • 2.Rd4#
      • 1...Bc8
        • 2.Rd4#
      • 1...Sb7
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 12
  • Sets
    • Q(b);N_PINR(E),P_PINR(H)::R1(E)
    • Q(b);N_PINR(E),P_PINR(H),XS(F)::R1(E)
    • Q(b);N_PINR(E),P_PINR(H),XP(C)::R1(E)
    • Q(b);CHECK,OGATE,P_PINR(H),XR(E)::P(B),XQ(b)
    • Q(b);OGATE::P(C),XQ(b)
    • R(j);N_GUARD::QAR(G),XP(c)
    • B(g);OGATE::R1(H)
    • B(g);CHECK,OGATE,XR(H)::QAB1(G),XB(g)
    • S(a);CHECK,N_GUARD::S(A),XS(a)
    • S(a);N_GUARD::S(A)
    • S(k);S_CUTR(j)::QAR(G),XP(c)
    • P(e);N_PINR(E),P_PINR(H)::R1(E)
  • Actual
    • S(F);
    • Threat
      • S(F),XP(f)
    • Vars
      • Q(b);CHECK,OGATE,P_PINR(H),XR(E)::P(B),XQ(b)
      • B(g);CHECK,OGATE,XR(H)::QAB1(G),XB(g)
      • S(a);CHECK,N_GUARD::S(A),XS(a)
      • B(g);OGATE,XS(F)::R1(H)
      • P(e);N_PINR(E),P_PINR(H)::R1(E)
      • B(g);OGATE::R1(H)
      • S(k);S_CUTR(j)::QAR(G),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).