MESON Chess Problem Database
Problem Display
PID: 54257 (4Q1b1/1p3np1/1Rp1R2b/5k1N/1pP3r1/1K2pN1B/4P3/8 w - - 0 1)
Lancia, Ugo
Chess Life, 1956
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Bf4
- 2.Sxg7#
- 1...Bg5
- 2.Sd4#
- 1...Bh7
- 2.Qxf7#
- 1...Se5
- 2.Rxe5#
- 1...Sg5
- 2.Sd4#
- 2.Sh4#
- 2.Re5#
- 2.Qg6#
- 1...Sd6
- 2.Re5#
- 2.Qg6#
- 1...Sd8
- 2.Re5#
- 2.Qg6#
- 1...Sh8
- 2.Re5#
- 1...g5
- 2.Sd4#
- 2.Rf6#
- 1...g6
- 2.Rf6#
- 1...Bf4
- Tries
- 1.Kxb4?
- 1...Se5
- 2.Rxe5#
- 1...Bf4
- 2.Sxg7#
- 1...Bg5
- 2.Sd4#
- 1...Bh7
- 2.Qxf7#
- 1...Sg5
- 2.Sd4#
- 2.Sh4#
- 2.Re5#
- 2.Qg6#
- 1...Sd6
- 2.Re5#
- 2.Qg6#
- 1...Sd8
- 2.Re5#
- 2.Qg6#
- 1...Sh8
- 2.Re5#
- 1...g5
- 2.Sd4#
- 2.Rf6#
- 1...g6
- 2.Rf6#
- 1...c5+!
- 1...Se5
- 1.Rxb7?
- 1...Se5
- 2.Rxe5#
- 1...Bf4
- 2.Sxg7#
- 1...Bg5
- 2.Sd4#
- 1...Bh7
- 2.Rxf7#
- 2.Qxf7#
- 1...Sg5
- 2.Sd4#
- 2.Sh4#
- 2.Re5#
- 2.Qg6#
- 1...Sd6
- 2.Re5#
- 2.Qg6#
- 1...Sd8
- 2.Re5#
- 2.Qg6#
- 1...Sh8
- 2.Re5#
- 1...g5
- 2.Sd4#
- 2.Rf6#
- 1...g6
- 2.Rf6#
- 1...c5!
- 1...Se5
- 1.Re4?
- threat
- 2.Qe6#
- 1...Se5
- 2.Rxe5#
- 1...Sg5
- 2.Sd4#
- 2.Sh4#
- 2.Bxg4#
- 2.Rf4#
- 2.Re5#
- 1...Sd6
- 2.Bxg4#
- 2.Re5#
- 1...Sd8
- 2.Bxg4#
- 2.Re5#
- 1...Sh8
- 2.Bxg4#
- 2.Re5#
- 1...Kg6!
- threat
- 1.Rd6?
- threat
- 2.Qe6#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Sd4#
- 2.Sh4#
- 2.Qg6#
- 2.Qe5#
- 1...Sd8
- 2.Qg6#
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...Sxd6!
- threat
- 1.Qxc6?
- threat
- 2.Qe4#
- 1...Sd6
- 2.Qd5#
- 1...Se5
- 2.Rxe5#
- 1...Sg5
- 2.Sd4#
- 2.Sh4#
- 2.Rb5#
- 2.Re5#
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...bxc6!
- threat
- 1.Qe7?
- threat
- 2.Sd4#
- 2.Sh4#
- 1...c5
- 2.Sh4#
- 1...Bg5
- 2.Sd4#
- 1...g5
- 2.Sd4#
- 2.Rf6#
- 2.Qf6#
- 1...Se5!
- threat
- 1.Kxb4?
- Keys
- 1.Qf8!
- 1...Kxe6
- 2.Bxg4#
- 1...c5
- 2.Re5#
- 1...Bf4
- 2.Sxg7#
- 1...Bg5
- 2.Sd4#
- 1...Bh7
- 2.Qxf7#
- 1...g5
- 2.Sd4#
- 1...g6
- 2.Re5#
- 1...Kxe6
- 1.Qf8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- B(f);N_GUARD,SBLOCK::S(F),XP(i)
- B(f);SBLOCK::S(C)
- B(j);N_GUARD::QAR2(I),XS(h)
- S(h);N_GUARD::R1(H),XS(h)
- S(h);N_GUARD::R1(H)
- P(i);N_GUARD::R1(H)
- Tries
- Try
- K(B);P-FLIGHT,P_SPINP(E),XP(b)
- Vars
- S(h);N_GUARD::R1(H),XS(h)
- B(f);N_GUARD,N_PINP(E),SBLOCK::S(F),XP(i)
- B(f);SBLOCK::S(C)
- B(j);N_GUARD::QAR2(I),XS(h)
- S(h);N_GUARD::R1(H)
- P(i);N_GUARD::R1(H)
- Refutation
- P(e);CHECK
- Try
- R(G);XP(g)
- Vars
- S(h);N_GUARD::R1(H),XS(h)
- B(f);N_GUARD,SBLOCK::S(F),XP(i)
- B(f);SBLOCK::S(C)
- S(h);N_GUARD::R1(H)
- P(i);N_GUARD::R1(H)
- Refutation
- P(e);
- Try
- R(H);
- Threat
- QAB1(I)
- Vars
- S(h);N_GUARD,P_PINP(E)::R1(H),XS(h)
- Refutation
- K(d);N_SPINR(c),P_SPINP(e),P_SPINS(h),S_FLIGHT
- Try
- R(H);
- Threat
- QAB1(I)
- Vars
- S(h);N_GUARD,P_PINP(E)::QAR1(I),XS(h)
- S(h);N_GUARD,P_PINP(E)::QAR1(I)
- Refutation
- S(h);P_PINP(E),XR(H)
- Try
- Q(I);XP(e)
- Threat
- QAB1(I)
- Vars
- S(h);N_GUARD::QAR2(I)
- S(h);N_GUARD::R1(H),XS(h)
- Refutation
- P(g);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- P(e);::S(C)
- B(f);::S(C)
- Refutation
- S(h);
- Try
- Actual
- Q(I);P_PINS(h)
- Vars
- K(d);N_SPINS(h),P_SPINP(e),S_FLIGHT,XR(H)::B(D),XR(c)
- P(e);::R1(H)
- B(f);N_GUARD,SBLOCK::S(F),XP(i)
- B(f);SBLOCK::S(C)
- B(j);N_GUARD::QAR2(I),XS(h)
- P(i);SBLOCK::S(C)
- P(i);SBLOCK::R1(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).