MESON Chess Problem Database
Problem Display
PID: 149706 (3nNB2/3rP2K/8/2kP1QN1/PR2R3/2Pq1P2/8/8 w - - 0 1)
Foschini, Ettore
L'Italia Scacchistica, 1930
#2
12 + 4
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Rec4#
- 1...Qc2
- 2.Rb5#
- 2.Rec4#
- 1...Qc4
- 2.Rexc4#
- 1...Qxe4
- 2.Sxe4#
- 1...Qb5
- 2.Rxb5#
- 1...Qd1
- 2.Rb5#
- 2.Rec4#
- 1...Qd2
- 2.Rb5#
- 2.Rec4#
- 1...Qxc3
- 2.Rb5#
- 1...Qe3
- 2.Rb5#
- 2.Rec4#
- 1...Qxf3
- 2.Rb5#
- 2.Rec4#
- 1...Qxd5
- 2.Rec4#
- 1...Rxd5
- 2.exd8S#
- 1...Rxe7+
- 2.Bxe7#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...Qb1
- Tries
- 1.Qxd7?
- threat
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qxe4+
- 2.Sxe4#
- 1...Qxc3
- 2.Rb5#
- 2.Qb5#
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qxf3
- 2.Rb5#
- 2.Rec4#
- 2.Qb5#
- 2.Qd6#
- 1...Qxd5
- 2.Rb5#
- 2.Qb5#
- 1...Qb5
- 2.Rxb5#
- 2.Qxb5#
- 2.Qd6#
- 2.exd8Q#
- 2.exd8B#
- 1...Qe2
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qb1
- 2.Qb5#
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qf1
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qc2
- 2.Rb5#
- 2.Qb5#
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qc4
- 2.Rexc4#
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qd1
- 2.Rb5#
- 2.Rec4#
- 2.Qb5#
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qd2
- 2.Rb5#
- 2.Rec4#
- 2.Qb5#
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qe3
- 2.Rb5#
- 2.Rec4#
- 2.Qb5#
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Qd4
- 2.Qb5#
- 2.Qd6#
- 2.exd8Q#
- 2.exd8S#
- 2.exd8B#
- 2.exd8R#
- 1...Sc6
- 2.Se6#
- 2.Qxc6#
- 2.Qd6#
- 1...Se6
- 2.Sxe6#
- 2.Qc6#
- 2.Qd6#
- 1...Sb7
- 2.Se6#
- 2.Qc6#
- 1...Sf7
- 2.Se6#
- 2.Qc6#
- 1...Qa6!
- threat
- 1.d6+?
- 1...Qd5
- 2.Rec4#
- 1...Kc6!
- 1...Qd5
- 1.Qxd7?
- Keys
- 1.Qe5!
- 1...Qxe4+
- 2.Sxe4#
- 1...Rxe7+
- 2.Bxe7#
- 1...Qxc3
- 2.Rb5#
- 1...Qxf3
- 2.Rb5#
- 2.Rec4#
- 2.Qd4#
- 1...Qxd5
- 2.Rec4#
- 1...Rxd5
- 2.exd8S#
- 1...Qb5
- 2.Rxb5#
- 2.Qd4#
- 1...Qe2
- 2.Qd4#
- 1...Qb1
- 2.Qd4#
- 1...Qf1
- 2.Qd4#
- 1...Qc2
- 2.Rb5#
- 2.Qd4#
- 1...Qc4
- 2.Rexc4#
- 1...Qa6
- 2.Qd4#
- 1...Qd1
- 2.Rb5#
- 2.Rec4#
- 1...Qd2
- 2.Rb5#
- 2.Rec4#
- 1...Qe3
- 2.Rb5#
- 2.Rec4#
- 1...Qd4
- 2.Qxd4#
- 1...Rd6
- 2.Qxd6#
- 1...Ra7
- 2.Qd6#
- 1...Rb7
- 2.Qd6#
- 1...Rc7
- 2.Qd6#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...Qxe4+
- 1.Qe5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- Q(a);N_GUARD::R1(E)
- Q(a);N_GUARD::R1(E),XQ(a)
- Q(a);P_PINQ(G),XR(E)::S(H),XQ(a)
- Q(a);N_GUARD::R1(D),XQ(a)
- Q(a);N_GUARD,XP(A)::R1(D)
- Q(a);N_GUARD,P_SPINQ(a),XP(F)::R1(E)
- R(c);N_PINP(I),P_SPINR(c),XP(F)::PXS(d)=S
- R(c);CHECK,OGATE,P_SPINR(c),XP(I)::B(L),XR(c)
- S(d);N_GUARD::S(H)
- S(d);N_GUARD::S(H),XS(d)
- S(d);N_GUARD,N_PINP(I)::S(H)
- Tries
- Try
- Q(G);N_SPINP(I),P_SPINR(E),XR(c)
- Threat
- DUALS(5)
- Vars
- Q(a);CHECK,XR(E)::S(H),XQ(a)
- Refutation
- Q(a);N_PINR(E)
- Try
- P(F);CHECK
- Vars
- Q(a);P_SPINQ(a)::R1(E)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- Q(G);P_SPINR(E)
- Vars
- Q(a);CHECK,XR(E)::S(H),XQ(a)
- R(c);CHECK,OGATE,P_SPINR(c),XP(I)::B(L),XR(c)
- Q(a);N_GUARD,N_PINR(E),XP(A)::R1(D)
- Q(a);N_PINR(E),P_SPINQ(a),XP(F)::R1(E)
- R(c);N_PINP(I),P_SPINR(c),XP(F)::PXS(d)=S
- Q(a);N_GUARD,N_PINR(E)::QAB1(G)
- Q(a);N_GUARD::QAB1(G)
- Q(a);N_PINR(E)::R1(E),XQ(a)
- Q(a);N_GUARD,N_PINR(E)::QAB1(G),XQ(a)
- R(c);N_GUARD,N_PINP(I)::QAB1(G),XR(c)
- R(c);N_GUARD::QAB1(G)
- S(d);N_GUARD::S(H)
- S(d);N_GUARD::S(H),XS(d)
- S(d);N_GUARD,N_PINP(I)::S(H)
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).