MESON Chess Problem Database
Problem Display
PID: 232877 (3K4/2N3P1/7b/3R1Pr1/3Nkp2/Q7/1npP4/3q4 w - - 0 1)
Morra, Juan Carlos
Il Due Mosse, 1956
#2
8 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf3
- 2.Qxf3#
- 1...Qa1
- 2.Qf3#
- 1...Qb1
- 2.Qf3#
- 1...Qc1
- 2.Qf3#
- 1...Qe1
- 2.Qf3#
- 1...Qg1
- 2.Qf3#
- 1...Qxd2
- 2.Qf3#
- 1...f3
- 2.Qe3#
- 1...Qf3
- Tries
- 1.Sdb5?
- threat
- 2.Sd6#
- 1...Sd3
- 2.Qxd3#
- 1...f3
- 2.Qe3#
- 1...Sc4
- 2.Qd3#
- 1...Rg6!
- threat
- 1.Re5+?
- 1...Kxd4
- 2.Qc3#
- 1...Kxe5!
- 1...Kxd4
- 1.Sdb5?
- Keys
- 1.Sf3!
- threat
- 2.Re5#
- 1...Qxf3
- 2.Qe7#
- 1...Qxd2
- 2.Sxd2#
- 1...Rxf5
- 2.Rd4#
- 1...Bxg7
- 2.Sxg5#
- 1...Sd3
- 2.Qxd3#
- 1...Sc4
- 2.Qd3#
- threat
- 1.Sf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- Q(a);N_GUARD::QAB1(B),XQ(a)
- Q(a);N_GUARD::QAB1(B)
- Q(a);N_GUARD,XP(A)::QAB1(B)
- P(e);N_GUARD::QAR1(B)
- Tries
- Try
- S(C);
- Threat
- S(C)
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- P(e);N_GUARD::QAR1(B)
- S(b);N_GUARD::QAB1(B)
- Refutation
- R(f);
- Try
- R(D);CHECK
- Vars
- K(d);P-FLIGHT,XS(C)::QAB1(B)
- Refutation
- K(d);P-FLIGHT,XR(D)
- Try
- Actual
- S(C);
- Threat
- R1(D)
- Vars
- Q(a);SBLOCK,XS(C)::QAR(B)
- Q(a);P_PINR(D),XP(A)::S(C),XQ(a)
- R(f);SBLOCK,XP(E)::R1(D)
- B(g);N_GUARD,XP(G)::S(C),XR(f)
- S(b);N_GUARD::QAB1(B),XS(b)
- S(b);N_GUARD::QAB1(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).