MESON Chess Problem Database
Problem Display
PID: 147704 (B3b3/2KpP3/2NPk1p1/R1p3p1/6n1/1N1p2P1/Q4q2/B4R2 w - - 0 1)
Cristoffanini, Guido
2/3 Prize, L'Italia Scacchistica, 1931
#2
11 + 9
| 14868 | Pirnie Collection | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Kd5
- 2.Sd2#
- 1...Kf7
- 2.Sxc5#
- 1...Qe1
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qg1
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qe3
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qxg3
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qd4
- 2.Sbxd4#
- 2.Sxc5#
- 1...Qxa2
- 2.Sd8#
- 1...Qb2
- 2.Sbd4#
- 2.Sxc5#
- 1...Qc2
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qd2
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qe2
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qg2
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qh2
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qf5
- 2.Sxc5#
- 2.Sd8#
- 1...Qf6
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qf7
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Qf8
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Sf6
- 2.Sbd4#
- 1...c4
- 2.Sd8#
- 1...Kd5
- Tries
- 1.Sc1+?
- 1...Qxa2
- 2.Sd8#
- 1...c4
- 2.Sd8#
- 2.Qxc4#
- 1...Kf5!
- 1...Qxa2
- 1.Sd2+?
- 1...c4
- 2.Sd8#
- 2.Qxc4#
- 1...Kf5!
- 1...c4
- 1.Bg7?
- threat
- 2.Sbd4#
- 1...Kd5
- 2.Sd2#
- 1...Kf5
- 2.Scd4#
- 1...Qxa2
- 2.Sd8#
- 1...Qd4
- 2.Sbxd4#
- 2.Sxc5#
- 2.Sd8#
- 1...c4
- 2.Sd8#
- 1...Kf7!
- threat
- 1.Rxf2?
- threat
- 2.Sbd4#
- 2.Sxc5#
- 2.Sd8#
- 1...Kd5
- 2.Sd2#
- 2.Sxc5#
- 1...dxc6
- 2.Sxc5#
- 1...c4
- 2.Sbd4#
- 2.Scd4#
- 2.Sd8#
- 1...Sxf2!
- threat
- 1.Rxc5?
- threat
- 2.Sd2#
- 2.Sd8#
- 1...Kf7
- 2.Sc1#
- 2.Sd2#
- 2.Sba5#
- 1...Qxc5
- 2.Sd4#
- 2.Sxc5#
- 1...Qxa2
- 2.Sbd4#
- 2.Scd4#
- 2.Sd8#
- 1...dxc6
- 2.Sd2#
- 1...Qd4
- 2.Sbxd4#
- 2.Scxd4#
- 2.Sd8#
- 1...Qb2
- 2.Sbd4#
- 2.Sd8#
- 1...Qc2
- 2.Sbd4#
- 2.Scd4#
- 2.Sd8#
- 1...Qd2
- 2.Sxd2#
- 2.Sbd4#
- 2.Scd4#
- 2.Sd8#
- 1...Qg2
- 2.Sbd4#
- 2.Scd4#
- 2.Sd8#
- 1...Qf3
- 2.Sd8#
- 1...Qf4
- 2.Sd8#
- 1...Qf5
- 2.Sd8#
- 1...Se3
- 2.Sd8#
- 1...Sf6
- 2.Sbd4#
- 2.Sd8#
- 1...d2
- 2.Sc1#
- 2.Sxd2#
- 2.Sba5#
- 2.Sd8#
- 1...Se5!
- threat
- 1.Sc1+?
- Keys
- 1.Bh8!
- threat
- 2.Sbd4#
- 1...Kd5
- 2.Sd2#
- 1...Kf5
- 2.Scd4#
- 1...Kf7
- 2.Sxc5#
- 1...Qxa2
- 2.Sd8#
- 1...Qd4
- 2.Sbxd4#
- 2.Sxc5#
- 2.Sd8#
- 1...c4
- 2.Sd8#
- threat
- 1.Bh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(f);P_SPINP(d),S_FLIGHT::QAB(C)+S(D)
- K(f);P_SPINQ(a),S_FLIGHT::QAB(C)+S(D),XP(d)
- Q(a);XQ(C)::S(G)
- S(c);SBLOCK::QAB(C)+S(D),DCHECK
- P(d);::S(G)
- Tries
- Try
- S(D);CHECK
- Vars
- Q(a);XQ(C)::S(G)
- Refutation
- K(f);P_SPINP(d),P_SPINQ(a),S_FLIGHT
- Try
- S(D);CHECK
- Refutation
- K(f);P_SPINP(d),P_SPINQ(a),S_FLIGHT
- Try
- B(A);
- Threat
- QAB(C)+S(D),DCHECK
- Vars
- K(f);P_SPINP(d),S_FLIGHT::QAB(C)+S(D)
- K(f);P_SPINP(d),P_SPINQ(a),S_FLIGHT::S(G)
- Q(a);XQ(C)::S(G)
- P(d);::S(G)
- Refutation
- K(f);P_SPINQ(a),S_FLIGHT
- Try
- R(B);XQ(a)
- Threat
- DUALS(3)
- Vars
- P(h);XS(G)::QAB(C)+S(D),DCHECK,XP(d)
- Refutation
- S(c);XR(B)
- Try
- R(F);XP(d)
- Threat
- DUALS(2)
- Vars
- P(h);XS(G)::QAB(C)+S(D)
- Q(a);::S(G)
- Q(a);P_PINP(H)::S(G)
- S(c);::S(G)
- Refutation
- S(c);
- Try
- Actual
- B(A);
- Threat
- QAB(C)+S(D),DCHECK
- Vars
- K(f);P_SPINP(d),S_FLIGHT::QAB(C)+S(D)
- K(f);P_SPINP(d),P_SPINQ(a),S_FLIGHT::S(G)
- K(f);P_SPINQ(a),S_FLIGHT::QAB(C)+S(D),XP(d)
- Q(a);XQ(C)::S(G)
- P(d);::S(G)
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).