MESON Chess Problem Database
Problem Display
PID: 202384 (2b1N2n/2N5/r2P3b/P4kPK/3P3R/3p2p1/1p4rp/Q1n2B1q w - - 0 1)
Somma, Francesco
L'Italia Scacchistica, 1923
#2
10 + 12
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Bh3#
- 1...Rc2
- 2.Bh3#
- 1...Rd2
- 2.Bh3#
- 1...Re2
- 2.Bh3#
- 1...Rf2
- 2.Bh3#
- 1...Rxa5
- 2.Qxa5#
- 1...Rxd6
- 2.Sxd6#
- 1...Bg7
- 2.Sxg7#
- 1...Sa2
- 2.Bxd3#
- 1...Sb3
- 2.Bxd3#
- 1...Rg1
- Tries
- 1.Kxh6?
- threat
- 2.Sg7#
- 1...Rxd6+
- 2.Sxd6#
- 1...Sf7+!
- threat
- 1.Qxc1?
- threat
- 2.Bxd3#
- 2.Rf4#
- 2.Qf4#
- 2.Qc5#
- 1...Qxf1
- 2.Qc5#
- 1...Rxa5
- 2.Bxd3#
- 2.Rf4#
- 2.Qf4#
- 1...Rxd6
- 2.Sxd6#
- 2.Bxd3#
- 2.Rf4#
- 2.Qf4#
- 1...Bxg5
- 2.Bxd3#
- 2.Qxg5#
- 2.Qc5#
- 1...bxc1Q
- 2.Bxd3#
- 1...bxc1B
- 2.Bxd3#
- 1...bxc1R
- 2.Bxd3#
- 1...b1Q
- 2.Rf4#
- 2.Qf4#
- 2.Qc5#
- 1...b1B
- 2.Rf4#
- 2.Qf4#
- 2.Qc5#
- 1...Rg1
- 2.Bh3#
- 2.Rf4#
- 2.Qf4#
- 1...Rc2
- 2.Bh3#
- 2.Rf4#
- 2.Qf4#
- 1...Rd2
- 2.Bh3#
- 1...Re2
- 2.Bh3#
- 2.Rf4#
- 2.Qf4#
- 1...Rf2
- 2.Bh3#
- 1...Rc6
- 2.Bxd3#
- 2.Rf4#
- 2.Qf4#
- 1...Bg7
- 2.Sxg7#
- 2.Bxd3#
- 2.Rf4#
- 2.Qf4#
- 1...Be6
- 2.Bxd3#
- 2.Rf4#
- 2.Qf4#
- 1...Bb7
- 2.Rf4#
- 2.Qf4#
- 1...Sg6
- 2.Bxd3#
- 1...Sf7
- 2.Bxd3#
- 2.Rf4#
- 2.Qf4#
- 1...d2
- 2.Bd3#
- 2.Qb1#
- 2.Qc2#
- 2.Qc5#
- 1...bxc1S!
- threat
- 1.Kxh6?
- Keys
- 1.Qa2!
- threat
- 2.Qd5#
- 1...Rxa5
- 2.Qxa5#
- 1...Rxd6
- 2.Sxd6#
- 1...Sxa2
- 2.Bxd3#
- 1...Rg1
- 2.Bh3#
- 1...Rc2
- 2.Bh3#
- 1...Rd2
- 2.Bh3#
- 1...Re2
- 2.Bh3#
- 1...Rf2
- 2.Bh3#
- 1...Bg7
- 2.Sxg7#
- 1...Be6
- 2.Qxe6#
- 1...Bb7
- 2.Qe6#
- 1...Sb3
- 2.Bxd3#
- 1...Sg6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- threat
- 1.Qa2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(d);OGATE::B(B)
- R(i);OGATE,XP(E)::QAR(A),XR(i)
- R(i);XP(H)::S(J),XR(i)
- B(j);N_GUARD::S(J),XB(j)
- S(a);N_GUARD::B(B),XP(f)
- Tries
- Try
- K(G);P-FLIGHT,P_SPINP(H),XB(j)
- Threat
- S(J)
- Vars
- R(i);CHECK,XP(H)::S(J),XR(i)
- Refutation
- S(l);CHECK
- Try
- Q(A);XS(a)
- Threat
- DUALS(4)
- Vars
- Q(b);XB(B)::QAR(A)
- P(c);XQ(A)::B(B),XP(f)
- R(d);OGATE::B(B)
- S(l);::B(B),XP(f)
- Refutation
- P(c);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAR2(A)
- Vars
- R(i);OGATE,XP(E)::QAR(A),XR(i)
- R(i);XP(H)::S(J),XR(i)
- S(a);N_GUARD,XQ(A)::B(B),XP(f)
- R(d);OGATE::B(B)
- B(j);N_GUARD::S(J),XB(j)
- B(k);N_GUARD::QAB1(A),XB(k)
- B(k);N_GUARD::QAB1(A)
- S(a);N_GUARD::B(B),XP(f)
- S(l);N_GUARD::QAR2(A)
- S(l);N_GUARD::QAR2(A),XS(l)
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).