MESON Chess Problem Database
Problem Display
PID: 147714 (Rn6/5qQ1/1k6/pP1B4/Pp2P3/4N3/2n1PB2/2RK4 w - - 0 1)
Cristoffanini, Guido
Tijdschrift vd NSB, 1930
#2
11 + 6
| 35 | L'Italia Scacchistica | 1930 |
| 14868 | Pirnie Collection | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Kc5
- 2.Sf5#
- 1...Qxd5+
- 2.Sxd5#
- 1...Qh5
- 2.Sxc2#
- 2.Sc4#
- 2.Qa7#
- 1...Qe6
- 2.Sxc2#
- 2.Sc4#
- 2.Qa7#
- 1...Qg6
- 2.Sxc2#
- 2.Sc4#
- 2.Qa7#
- 1...Qe8
- 2.Sxc2#
- 2.Sc4#
- 2.Qa7#
- 1...Qg8
- 2.Sxc2#
- 2.Sc4#
- 2.Qa7#
- 1...Qxf2
- 2.Qa7#
- 1...Qf3
- 2.Sc4#
- 2.Qa7#
- 1...Qf4
- 2.Sc4#
- 2.Qa7#
- 1...Qf5
- 2.Sc4#
- 2.Qa7#
- 1...Qf6
- 2.Sc4#
- 2.Qa7#
- 1...Qa7
- 2.Sxc2#
- 2.Sc4#
- 2.Qxa7#
- 1...Qb7
- 2.Sxc2#
- 2.Sc4#
- 1...Qc7
- 2.Sc4#
- 1...Qf8
- 2.Sc4#
- 2.Qa7#
- 1...Sa1
- 2.Sf5#
- 2.Qd4#
- 1...Se1
- 2.Sf5#
- 2.Qd4#
- 1...Sa3
- 2.Sf5#
- 2.Qd4#
- 1...Sxe3+
- 2.Bxe3#
- 1...Sd4
- 2.Qxd4#
- 1...Kc5
- Tries
- 1.Sf1+?
- 1...Qxf2
- 2.Qa7#
- 1...Se3+
- 2.Bxe3#
- 1...Sd4
- 2.Bxd4#
- 2.Qxd4#
- 1...Kc7!
- 1...Qxf2
- 1.Sxc2+?
- 1...Qxf2
- 2.Qa7#
- 1...Kc7!
- 1...Qxf2
- 1.Sg2+?
- 1...Qxf2
- 2.Qa7#
- 1...Se3+
- 2.Bxe3#
- 1...Sd4
- 2.Bxd4#
- 2.Qxd4#
- 1...Kc7!
- 1...Qxf2
- 1.Sg4+?
- 1...Qxf2
- 2.Qa7#
- 1...Se3+
- 2.Bxe3#
- 1...Sd4
- 2.Bxd4#
- 2.Qxd4#
- 1...Kc7!
- 1...Qxf2
- 1.Sf5+?
- 1...Se3+
- 2.Bxe3#
- 1...Sd4
- 2.Bxd4#
- 2.Qxd4#
- 1...Kc7!
- 1...Se3+
- 1.Qxf7?
- threat
- 2.Sxc2#
- 2.Sc4#
- 2.Qa7#
- 1...Sxe3+
- 2.Bxe3#
- 1...Kc5
- 2.Sf5#
- 1...Sa1
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sf5#
- 2.Rxb8#
- 2.Qa7#
- 2.Qb7#
- 2.Qc7#
- 1...Se1
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sf5#
- 2.Rxb8#
- 2.Qa7#
- 2.Qb7#
- 2.Qc7#
- 1...Sa3
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sf5#
- 2.Rxb8#
- 2.Qa7#
- 2.Qb7#
- 2.Qc7#
- 1...Sd4
- 2.Rxb8#
- 2.Qa7#
- 2.Qb7#
- 2.Qc7#
- 1...Sa6
- 2.Sc4#
- 2.Qa7#
- 1...Sc6
- 2.Sc4#
- 1...Sd7!
- threat
- 1.Sf1+?
- Keys
- 1.Ra7!
- threat
- 2.Sc4#
- 1...Qxd5+
- 2.Sxd5#
- 1...Sxe3+
- 2.Bxe3#
- 1...Kc5
- 2.Sf5#
- 1...Kxa7
- 2.Sxc2#
- 1...Qxf2
- 2.Qc7#
- 1...Sd4
- 2.Qxd4#
- threat
- 1.Ra7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(d);P_SPINS(a),S_FLIGHT::B(D)+S(E)
- Q(e);CHECK,XB(I)::B(D)+S(E),DCHECK,XQ(e)
- Q(e);OGATE,XB(D)::QAB1(J)
- Q(e);::B(D)+S(E),DCHECK
- S(a);CHECK,OGATE,P_SPINS(a),XS(E)::B(D),XS(a)
- S(a);N_GUARD::QAB(J),XS(a)
- Tries
- Try
- S(E);CHECK
- Vars
- Q(e);OGATE,XB(D)::QAB1(J)
- S(a);CHECK,N_GUARD,P_SPINS(a)::B(D),XS(a)
- Refutation
- K(d);P_SPINQ(e),P_SPINS(a),S_FLIGHT
- Try
- S(E);CHECK,XS(a)
- Vars
- Q(e);OGATE,XB(D)::QAB1(J)
- Refutation
- K(d);P_SPINQ(e),S_FLIGHT
- Try
- S(E);CHECK
- Vars
- Q(e);OGATE,XB(D)::QAB1(J)
- S(a);CHECK,N_GUARD,P_SPINS(a)::B(D),XS(a)
- Refutation
- K(d);P_SPINQ(e),P_SPINS(a),S_FLIGHT
- Try
- S(E);CHECK
- Vars
- Q(e);OGATE,XB(D)::QAB1(J)
- S(a);CHECK,N_GUARD,P_SPINS(a)::B(D),XS(a)
- Refutation
- K(d);P_SPINQ(e),P_SPINS(a),S_FLIGHT
- Try
- S(E);CHECK
- Vars
- S(a);CHECK,N_GUARD,P_SPINS(a)::B(D),XS(a)
- Refutation
- K(d);P_SPINQ(e),P_SPINS(a),S_FLIGHT
- Try
- Q(J);XQ(e)
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,OGATE,P_SPINS(a),XS(E)::B(D),XS(a)
- K(d);P_SPINS(a),S_FLIGHT::B(D)+S(E)
- S(f);::B(D)+S(E),DCHECK
- Refutation
- S(f);
- Try
- Actual
- R(K);
- Threat
- B(D)+S(E),DCHECK
- Vars
- Q(e);CHECK,XB(I)::B(D)+S(E),DCHECK,XQ(e)
- S(a);CHECK,OGATE,P_SPINS(a),XS(E)::B(D),XS(a)
- K(d);P_SPINS(a),S_FLIGHT::B(D)+S(E)
- K(d);P_SPINQ(e),S_FLIGHT,XR(K)::B(D)+S(E),XS(a)
- Q(e);OGATE,XB(D)::QAB1(J)
- S(a);N_GUARD::QAB(J),XS(a)
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).