MESON Chess Problem Database

Problem Display
PID: 170057 (1Q3R1B/2p1p1n1/3p1q2/r2bkPN1/1pP1p2N/3R2PK/5P1P/r7 w - - 0 1)

Salamanca, Tomas

Enroque!!, 1947

1Q3R1B/2p1p1n1/3p1q2/r2bkPN1/1pP1p2N/3R2PK/5P1P/r7

#2

12 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5+
      • 2.Rxf5#
    • 1...Qg6
      • 2.Sxg6#
    • 1...Ra2
      • 2.Rxd5#
    • 1...Ra3
      • 2.Rxd5#
    • 1...Ra4
      • 2.Rxd5#
    • 1...Ra6
      • 2.Rxd5#
    • 1...Ra7
      • 2.Rxd5#
    • 1...Ra8
      • 2.Rxd5#
    • 1...Sxf5
      • 2.Sg6#
    • 1...Se6
      • 2.Sf7#
    • 1...e3
      • 2.f4#
    • 1...c5
      • 2.Rxd5#
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qd4#
      • 1...Qxf5+
        • 2.Rxf5#
      • 1...Rxa7
        • 2.Rxd5#
      • 1...Sxf5
        • 2.Sg6#
      • 1...exd3
        • 2.f4#
      • 1...Rc5
        • 2.Qxa1#
      • 1...Se6
        • 2.Sf7#
      • 1...c5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(h);CHECK,OGATE,P_SPINS(k),XP(H)::R1(K),XQ(h)
    • Q(h);N_GUARD,P_SPINS(k)::S(G),XQ(h)
    • R(d);N_GUARD::R1(C),XB(e)
    • S(k);P_SPINQ(h),SBLOCK,XP(H)::S(G)
    • S(k);P_SPINQ(h),S_CUTB(e)::S(I)
    • P(c);N_GUARD::P(A)
    • P(i);P_SPINP(g),S_CUTR(d)::R1(C),XB(e)
  • Actual
    • Q(J);
    • Threat
      • QAB1(J)
    • Vars
      • Q(h);CHECK,OGATE,P_SPINS(k),XP(H)::R1(K),XQ(h)
      • R(d);N_GUARD,XQ(J)::R1(C),XB(e)
      • S(k);P_SPINQ(h),SBLOCK,XP(H)::S(G)
      • P(c);N_GUARD,XR(C)::P(A)
      • R(d);OGATE::QAB(J),XR(a)
      • S(k);P_SPINQ(h),S_CUTB(e)::S(I)
      • P(i);S_CUTR(d)::R1(C),XB(e)
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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).