MESON Chess Problem Database
Problem Display
PID: 74370 (1B1RQR2/r1q1N1K1/4b1n1/2P1k1N1/6Pp/4b3/5nB1/5r2 w - - 0 1)
Cristoffanini, Guido
3rd Prize=, L'Italia Scacchistica, 1927
#2
10 + 9
| 133 | The Problemist Supplement | 2007 |
| 14868 | Pirnie Collection | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bxc7#
- 1...Ra2
- 2.Bxc7#
- 1...Ra3
- 2.Bxc7#
- 1...Ra4
- 2.Bxc7#
- 1...Ra5
- 2.Bxc7#
- 1...Ra8
- 2.Bxc7#
- 1...Ba2
- 2.Rf5#
- 1...Bb3
- 2.Rf5#
- 1...Bc4
- 2.Rf5#
- 1...Bxg4
- 2.Rd5#
- 1...Bd5
- 2.Rxd5#
- 1...Bf5
- 2.Rxf5#
- 1...Bd7
- 2.Sc6#
- 1...Bf7
- 2.Sxg6#
- 1...Bc8
- 2.Rd5#
- 1...Bg8
- 2.Rf5#
- 1...Ra1
- Tries
- 1.Sf7+?
- 1...Bxf7
- 2.Sxg6#
- 1...Kf4!
- 1...Bxf7
- 1.Rf7?
- threat
- 2.Sc6#
- 2.Sxg6#
- 1...Bxf7
- 2.Sxg6#
- 1...Qd6
- 2.Sc6#
- 1...Bd5
- 2.Sc6#
- 2.Rxd5#
- 1...Bf5
- 2.Sxg6#
- 2.Rxf5#
- 1...Bd7
- 2.Sc6#
- 1...Ra6
- 2.Sxg6#
- 1...Sf4
- 2.Sc6#
- 1...Sf8
- 2.Sc6#
- 1...Sh8
- 2.Sc6#
- 1...Sxe7!
- threat
- 1.Qxg6?
- threat
- 2.Sf3#
- 2.Qxe6#
- 2.Qf6#
- 1...Bxg4
- 2.Rd5#
- 2.Qf6#
- 1...Sxg4
- 2.Qe4#
- 2.Qxe6#
- 1...Qd6
- 2.Sf3#
- 2.Qf6#
- 1...Bd5
- 2.Rxd5#
- 2.Qf6#
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Bd7
- 2.Sf3#
- 2.Qf6#
- 1...Bf7
- 2.Qf5#
- 2.Qf6#
- 1...Ra6
- 2.Sf3#
- 2.Qf6#
- 1...Ba2
- 2.Sf3#
- 2.Rf5#
- 2.Qf5#
- 2.Qf6#
- 1...Bb3
- 2.Sf3#
- 2.Rf5#
- 2.Qf5#
- 2.Qf6#
- 1...Bc4
- 2.Sf3#
- 2.Rf5#
- 2.Qf5#
- 2.Qf6#
- 1...Bc8
- 2.Sf3#
- 2.Rd5#
- 2.Qf6#
- 1...Bg8
- 2.Sf3#
- 2.Rf5#
- 2.Qf5#
- 2.Qf6#
- 1...Sd1
- 2.Qe4#
- 2.Qxe6#
- 1...Sh1
- 2.Qe4#
- 2.Qxe6#
- 1...Sd3
- 2.Qe4#
- 2.Qxe6#
- 1...Sh3
- 2.Qe4#
- 2.Qxe6#
- 1...Se4
- 2.Qxe4#
- 2.Qxe6#
- 1...Bxg5!
- threat
- 1.Qf7?
- threat
- 2.Sc6#
- 2.Sxg6#
- 2.Qxe6#
- 2.Qf6#
- 1...Bxg5
- 2.Sc6#
- 2.Sxg6#
- 1...Bxg4
- 2.Sc6#
- 2.Sxg6#
- 2.Rd5#
- 2.Qd5#
- 2.Qf6#
- 1...Sxg4
- 2.Sc6#
- 2.Sxg6#
- 2.Qxe6#
- 1...Sxe7
- 2.Qxe6#
- 2.Qf6#
- 1...Sxf8
- 2.Sc6#
- 2.Qf6#
- 1...Qd6
- 2.Sc6#
- 2.Qf6#
- 1...Bd5
- 2.Rxd5#
- 2.Qxd5#
- 2.Qf6#
- 1...Bf5
- 2.Qxf5#
- 1...Bd7
- 2.Qd5#
- 2.Qf6#
- 1...Ra6
- 2.Sxg6#
- 2.Qf6#
- 1...Ba2
- 2.Sc6#
- 2.Sxg6#
- 2.Qf5#
- 2.Qf6#
- 1...Bb3
- 2.Sc6#
- 2.Sxg6#
- 2.Qf5#
- 2.Qf6#
- 1...Bc4
- 2.Sc6#
- 2.Sxg6#
- 2.Qf5#
- 2.Qf6#
- 1...Bc8
- 2.Sc6#
- 2.Sxg6#
- 2.Rd5#
- 2.Qd5#
- 2.Qf6#
- 1...Sd1
- 2.Sc6#
- 2.Sxg6#
- 2.Qxe6#
- 1...Sh1
- 2.Sc6#
- 2.Sxg6#
- 2.Qxe6#
- 1...Sd3
- 2.Sc6#
- 2.Sxg6#
- 2.Qxe6#
- 1...Sh3
- 2.Sc6#
- 2.Sxg6#
- 2.Qxe6#
- 1...Se4
- 2.Sc6#
- 2.Sxg6#
- 2.Qxe6#
- 1...Sf4
- 2.Sc6#
- 2.Qf6#
- 1...Sh8
- 2.Sc6#
- 2.Qxe6#
- 2.Qf6#
- 1...Bxf7!
- threat
- 1.Sf7+?
- Keys
- 1.Qa4!
- threat
- 2.Sf3#
- 1...Rxa4
- 2.Bxc7#
- 1...Bxg5
- 2.Qd4#
- 1...Bxg4
- 2.Rd5#
- 1...Sxg4
- 2.Qe4#
- 1...Bd4
- 2.Qxd4#
- 1...Ba2
- 2.Rf5#
- 1...Bb3
- 2.Rf5#
- 1...Bc4
- 2.Rf5#
- 1...Bd5
- 2.Rxd5#
- 2.Rf5#
- 1...Bf5
- 2.Rd5#
- 2.Rxf5#
- 1...Bd7
- 2.Sxg6#
- 1...Bf7
- 2.Sc6#
- 1...Bc8
- 2.Rd5#
- 1...Bg8
- 2.Rf5#
- 1...Sd1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 8
- REMOVED MATES = 7
- Sets
- R(h);N_GUARD::B(G),XQ(i)
- B(f);N_GUARD::R1(J)
- B(f);N_GUARD,XP(B)::R1(H)
- B(f);N_GUARD::R1(H),XB(f)
- B(f);N_GUARD::R1(J),XB(f)
- B(f);N_PINS(E)::QAR(I)+S(E),DCHECK
- B(f);N_PINS(E)::QAR(I)+S(E),DCHECK,XS(g)
- B(f);N_GUARD::R1(H)
- Tries
- Try
- S(D);CHECK,N_SPINS(E)
- Vars
- B(f);XS(D)::QAR(I)+S(E),DCHECK,XS(g)
- Refutation
- K(e);S_FLIGHT
- Try
- R(J);N_SPINS(E)
- Threat
- DUALS(2)
- Vars
- B(f);XR(J)::QAR(I)+S(E),DCHECK,XS(g)
- Q(i);::S(E)
- B(f);::QAR(I)+S(E),DCHECK
- R(h);::S(E),XS(g)
- S(g);::S(E)
- Refutation
- S(g);XS(E)
- Try
- Q(I);XS(g)
- Threat
- DUALS(3)
- Refutation
- B(c);XS(D)
- Try
- Q(I);N_SPINS(E)
- Threat
- DUALS(4)
- Vars
- B(f);N_GUARD::QAR1(I),XB(f)
- Refutation
- B(f);XQ(I)
- Try
- Actual
- Q(I);
- Threat
- S(D)
- Vars
- R(h);N_GUARD,XQ(I)::B(G),XQ(i)
- B(c);N_GUARD,XS(D)::QAB1(I)
- B(f);N_GUARD,XP(B)::R1(H)
- S(b);N_GUARD,XP(B)::QAR1(I)
- B(c);N_GUARD::QAB1(I),XB(c)
- B(f);N_GUARD::R1(J)
- B(f);N_PINS(E)::S(E),XS(g)
- B(f);N_PINS(E)::S(E)
- B(f);N_GUARD::R1(H)
- S(b);N_GUARD::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
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).