MESON Chess Problem Database

Problem Display
PID: 70732 (2K5/p1P1P3/r2p1R2/b2k1pP1/Q2N1R2/n1pN3b/2Pn2r1/8 w - - 0 1)

Overkamp, Petrus

Il Due Mosse, 1955

2K5/p1P1P3/r2p1R2/b2k1pP1/Q2N1R2/n1pN3b/2Pn2r1/8

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.R6xf5#
    • 1...Rc6
      • 2.Qxc6#
    • 1...Bb6
      • 2.Qc6#
    • 1...Sb1
      • 2.Qb5#
    • 1...Sxc2
      • 2.Qb5#
    • 1...Sc4
      • 2.Qb5#
    • 1...Sb5
      • 2.Qxb5#
  • Tries
    • 1.R4xf5+?
      • 1...Ke4
        • 2.Re6#
        • 2.e8Q#
        • 2.e8R#
      • 1...Bxf5+!
    • 1.Rxd6+?
      • 1...Kxd6
        • 2.Qd7#
      • 1...Rxd6!
    • 1.e8Q?
      • threat
        • 2.Qf7#
        • 2.Qe6#
        • 2.Qg8#
      • 1...Rxg5
        • 2.Qf7#
        • 2.Qe6#
      • 1...Re2!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Rd4#
      • 1...Bxf5+
        • 2.R4xf5#
      • 1...Sxc2
        • 2.Qb5#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Bb6
        • 2.Rxd6#
      • 1...Rg4
        • 2.Se3#
      • 1...Sb3
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(b);S_CUTB(e)::R(G),XP(h)
    • R(i);N_GUARD,P_PINP(H)::QAB1(C),XR(i)
    • B(f);S_CUTR(i)::QAB1(C)
    • S(c);N_GUARD::QAR2(C)
    • S(c);N_GUARD,XP(A)::QAR2(C)
    • S(c);N_GUARD::QAR2(C),XS(c)
  • Tries
    • Try
      • R(E);CHECK,P_SPINR(E),XP(h)
      • Refutation
        • B(e);CHECK,XR(E)
    • Try
      • R(G);CHECK,XP(j)
      • Vars
        • K(g);P-FLIGHT,XR(G)::QAR1(C)
      • Refutation
        • R(i);XR(G)
    • Try
      • P(I);
      • Threat
        • DUALS(3)
      • Refutation
        • R(b);
  • Actual
    • S(D);P_SPINS(D),XP(h)
    • Threat
      • R1(E)
    • Vars
      • B(e);CHECK,OGATE,XS(D)::R(E),XB(e)
      • S(c);N_GUARD,XP(A)::QAR2(C)
      • S(c);N_GUARD::QAR2(C),XS(c)
      • B(f);S_CUTR(i)::R1(G),XP(j)
      • R(b);N_PINS(D)::S(D)
      • S(a);N_GUARD::QAB1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
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).