MESON Chess Problem Database

Problem Display
PID: 174019 (n2Q4/1bP3bp/2p1p1Rr/R1N1k3/2ppBN1p/3r2nK/3P2PB/8 w - - 0 1)

Bottacchi, Antonio

L'Echiquier, 1928

n2Q4/1bP3bp/2p1p1Rr/R1N1k3/2ppBN1p/3r2nK/3P2PB/8

#2

11 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Qg5#
    • 1...Sf1+
      • 2.Sfxd3#
    • 1...Sh1+
      • 2.Sfxd3#
    • 1...Se2+
      • 2.Sfxd3#
    • 1...Sxe4+
      • 2.Scxd3#
    • 1...Sf5+
      • 2.Sfxd3#
    • 1...Sh5+
      • 2.Sfxd3#
    • 1...Sxc7
      • 2.Qxc7#
    • 1...c3
      • 2.Sfxd3#
  • Tries
    • 1.Sd7+?
      • 1...Kxf4
        • 2.Rg4#
      • 1...Kd6
        • 2.Se5#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...Kxe4!
    • 1.Bf3?
      • threat
        • 2.Scxd3#
      • 1...Kxf4
        • 2.Sxe6#
        • 2.Qg5#
      • 1...Kf5
        • 2.Qg5#
      • 1...Rxd2
        • 2.Scd3#
      • 1...Ra3
        • 2.Scd3#
      • 1...Rb3
        • 2.Scd3#
      • 1...Rc3
        • 2.Scd3#
      • 1...Re3
        • 2.Scd3#
      • 1...Rxf3!
    • 1.Bxc6?
      • threat
        • 2.Scxd3#
        • 2.Scxe6#
      • 1...Sf1+
        • 2.Scxd3#
      • 1...Sh1+
        • 2.Scxd3#
      • 1...Se2+
        • 2.Scxd3#
      • 1...Se4+
        • 2.Scxd3#
      • 1...Sf5+
        • 2.Sfxd3#
        • 2.Scxd3#
      • 1...Sh5+
        • 2.Scxd3#
      • 1...Kxf4
        • 2.Sxe6#
        • 2.Qg5#
      • 1...Kf5
        • 2.Qg5#
      • 1...Rxd2
        • 2.Scd3#
        • 2.Scxe6#
      • 1...Sxc7
        • 2.Scxd3#
      • 1...Ra3
        • 2.Scd3#
      • 1...Rb3
        • 2.Scd3#
      • 1...Rc3
        • 2.Scd3#
        • 2.Scxe6#
      • 1...Re3
        • 2.Scd3#
        • 2.Scxe6#
      • 1...Rf3
        • 2.Scd3#
        • 2.Scxe6#
      • 1...Ba6
        • 2.Scxd3#
      • 1...Bf8
        • 2.Scxd3#
      • 1...Sb6
        • 2.Scxd3#
      • 1...Bxc6!
    • 1.Rg5+?
      • 1...Sf5+
        • 2.Sfxd3#
      • 1...Kxf4!
    • 1.Qg5+?
      • 1...Sf5+
        • 2.Sfxd3#
      • 1...Kd6!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Scxd3#
      • 1...Sxf5+
        • 2.Sfxd3#
      • 1...Kxf4
        • 2.Sxe6#
      • 1...Kxf5
        • 2.Qg5#
      • 1...Rxd2
        • 2.Scd3#
      • 1...exf5
        • 2.Qd6#
      • 1...Ra3
        • 2.Scd3#
      • 1...Rb3
        • 2.Scd3#
      • 1...Rc3
        • 2.Scd3#
      • 1...Re3
        • 2.Scd3#
      • 1...Rf3
        • 2.Scd3#

This is a version

Version by Oscar Bonivento.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 7
  • Sets
    • K(f);P_SPINS(b),S_FLIGHT,XS(F)::QAB1(K)
    • S(b);CHECK::B(C)+S(F),DCHECK,XR(a)
    • S(b);CHECK,SBLOCK,XB(E)::R(G)+S(H),DCHECK,XR(a)
    • S(m);OGATE,XP(J)::QAB(K),XS(m)
    • P(c);N_GUARD::S(F),XR(a)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(f);P_SPINS(b),S_FLIGHT,XS(F)::R1(I)
      • Refutation
        • K(f);P-FLIGHT,XB(E)
    • Try
      • B(E);
      • Threat
        • R(G)+S(H),DCHECK,XR(a)
      • Vars
        • K(f);P-FLIGHT::QAR1(K)
        • R(a);XP(A)::R(G)+S(H),DCHECK
        • R(a);::R(G)+S(H),DCHECK
      • Refutation
        • R(a);XB(E)
    • Try
      • B(E);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);CHECK::R(G)+S(H),DCHECK,XR(a)
        • K(f);P-FLIGHT::QAR1(K)
        • S(m);XP(J)::R(G)+S(H),DCHECK,XR(a)
        • R(a);::R(G)+S(H),DCHECK
        • B(j);::R(G)+S(H),DCHECK,XR(a)
        • B(k);::R(G)+S(H),DCHECK,XR(a)
        • S(m);::R(G)+S(H),DCHECK,XR(a)
      • Refutation
        • B(j);XB(E)
    • Try
      • R(I);CHECK
      • Vars
        • S(b);CHECK,P_SPINS(b)::B(C)+S(F),DCHECK,XR(a)
      • Refutation
        • K(f);P_SPINS(b),S_FLIGHT,XS(F)
    • Try
      • Q(K);CHECK
      • Vars
        • S(b);CHECK,P_SPINS(b)::B(C)+S(F),DCHECK,XR(a)
      • Refutation
        • K(f);P_SPINP(h),S_FLIGHT
  • Actual
    • B(E);
    • Threat
      • R(G)+S(H),DCHECK,XR(a)
    • Vars
      • S(b);CHECK,SBLOCK,XB(E)::B(C)+S(F),DCHECK,XR(a)
      • K(f);P_SPINS(b),S_FLIGHT,XS(F)::S(H),XP(h)
      • K(f);OGATEB,P-FLIGHT,XB(E)::QAR1(K)
      • R(a);XP(A)::R(G)+S(H),DCHECK
      • P(h);SBLOCK,XB(E)::QAB1(K)
      • R(a);::R(G)+S(H),DCHECK
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).