MESON Chess Problem Database

Problem Display
PID: 235555 (3bR2B/q4p1b/1PRPpnp1/pr2k1N1/7n/Kp1Q2PB/1P2r3/8 w - - 0 1)

Goldschmeding, Cornelis

4th HM., Magyar Sakkelet, 1973

3bR2B/q4p1b/1PRPpnp1/pr2k1N1/7n/Kp1Q2PB/1P2r3/8

#2

11 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb6
      • 2.Sxf7#
    • 1...Qb8
      • 2.Sxf7#
    • 1...Qa6
      • 2.Sxf7#
    • 1...Qa8
      • 2.Sxf7#
    • 1...Rxb2
      • 2.Qe4#
    • 1...Rc2
      • 2.Qe4#
    • 1...Rd2
      • 2.Qe4#
    • 1...Rf2
      • 2.Qe4#
    • 1...Rg2
      • 2.Qe4#
    • 1...Rh2
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rb4
      • 2.Rc5#
    • 1...Rc5
      • 2.Rxc5#
    • 1...Rxb6
      • 2.Rc5#
    • 1...Bc7
      • 2.Sxf7#
    • 1...Be7
      • 2.Sxf7#
    • 1...Sg2
      • 2.Sf3#
    • 1...Sf3
      • 2.Sxf3#
    • 1...Sf5
      • 2.Sf3#
  • Tries
    • 1.Qxe2+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kd5!
    • 1.bxa7?
      • threat
        • 2.Sxf7#
      • 1...Rb7
        • 2.Rc5#
      • 1...Bg8!
  • Keys
    • 1.Bxe6!
      • threat
        • 2.Qc3#
      • 1...Qxb6
        • 2.Sxf7#
      • 1...Bxb6
        • 2.Bd7#
      • 1...fxe6
        • 2.Rxe6#
      • 1...Rc2
        • 2.Qe4#
        • 2.Qe3#
      • 1...Rd2
        • 2.Qe4#
        • 2.Qe3#
      • 1...Re3
        • 2.Qxe3#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rb4
        • 2.Rc5#
        • 2.Qd5#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Sf3
        • 2.Sxf3#
      • 1...Sf5
        • 2.Sf3#

There are these versions: 99685

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 14
  • Sets
    • Q(j);N_GUARD,XP(G)::S(F),XP(k)
    • Q(j);N_GUARD::S(F),XP(k)
    • R(a);N_GUARD,XP(A)::QAR1(C)
    • R(a);N_GUARD::QAR1(C)
    • R(a);N_GUARD::QAR1(C),XR(a)
    • R(e);N_GUARD::R(H)
    • R(e);N_GUARD::R(H),XR(e)
    • R(e);N_GUARD,XP(G)::R(H)
    • B(m);S_CUTQ(j)::S(F),XP(k)
    • B(m);N_SPINP(g),P_PINP(I),S_CUTQ(j)::S(F),XP(k)
    • S(c);N_GUARD::S(F)
    • S(c);N_GUARD::S(F),XS(c)
  • Tries
    • Try
      • Q(C);CHECK,XR(a)
      • Vars
        • K(f);N_SPINP(g),S_FLIGHT::QAR1(C)
      • Refutation
        • K(f);N_SPINP(g),N_SPINS(h),P-FLIGHT
    • Try
      • P(G);XQ(j)
      • Threat
        • S(F),XP(k)
      • Vars
        • R(e);N_GUARD::R(H)
      • Refutation
        • B(l);
  • Actual
    • B(E);XP(g)
    • Threat
      • QAB(C)
    • Vars
      • Q(j);N_GUARD,XP(G)::S(F),XP(k)
      • B(m);N_GUARD,XP(G)::R(J)+B(E)
      • P(k);OGATE,P_SPINP(k),XB(E)::R1(J),XP(k)
      • R(a);N_GUARD::QAR2(C),XR(a)
      • R(a);N_GUARD::QAR1(C),XR(a)
      • R(e);N_GUARD::R(H),XR(e)
      • R(e);N_GUARD::QAR1(C),XR(e)
      • S(c);N_GUARD::S(F),XS(c)
      • S(c);N_GUARD::S(F)
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).