MESON Chess Problem Database
Problem Display
PID: 243559 (2b2q2/4rpn1/NpP1Rr1p/n2kB3/5pN1/2QP3K/4P3/8 w - - 0 1)
Castellari, Umberto
Il Due Mosse, 1953
#2
9 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf5
- 2.Rd6#
- 1...Rfxe6
- 2.Sb4#
- 1...Rexe6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Re8
- 2.Sc7#
- 1...Bxe6
- 2.Sb4#
- 1...Bd7
- 2.Sc7#
- 1...Sb3
- 2.Qxb3#
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sxc6
- 2.Qb3#
- 2.Qc4#
- 2.Qxc6#
- 1...Sb7
- 2.Qb3#
- 2.Qc4#
- 1...Sxe6
- 2.Sxf6#
- 2.Sb4#
- 1...fxe6
- 2.Sb4#
- 1...Rf5
- Tries
- 1.Bc7?
- threat
- 2.Qe5#
- 1...Kxe6
- 2.Qe5#
- 1...Rfxe6
- 2.Sb4#
- 1...Bxe6
- 2.Sb4#
- 1...Sxc6
- 2.Qc4#
- 1...Sxe6
- 2.Sxf6#
- 2.Sb4#
- 1...fxe6
- 2.Sb4#
- 1...Rf5
- 2.Rd6#
- 1...Sc4
- 2.Qxc4#
- 1...Rexe6!
- threat
- 1.Bb8?
- threat
- 2.Qe5#
- 1...Kxe6
- 2.Qe5#
- 1...Rfxe6
- 2.Sb4#
- 1...Bxe6
- 2.Sb4#
- 1...Sxc6
- 2.Qc4#
- 1...Sxe6
- 2.Sxf6#
- 2.Sb4#
- 1...fxe6
- 2.Sb4#
- 1...Rf5
- 2.Rd6#
- 1...Sc4
- 2.Qxc4#
- 1...Rexe6!
- threat
- 1.Rxf6?
- threat
- 2.Sb4#
- 2.Rd6#
- 2.Qd4#
- 1...Rxe5
- 2.Sc7#
- 2.Qxe5#
- 1...Bxa6
- 2.Rd6#
- 2.Qd4#
- 1...Sxc6
- 2.Rd6#
- 2.Qb3#
- 2.Qc4#
- 2.Qxc6#
- 1...Qd8
- 2.Sb4#
- 2.Qd4#
- 1...Re6
- 2.Sc7#
- 1...Ra7
- 2.Qd4#
- 1...Rb7
- 2.Qd4#
- 1...Rc7
- 2.Sxc7#
- 2.Qd4#
- 1...Rd7
- 2.Qd4#
- 1...Re8
- 2.Sc7#
- 2.Qd4#
- 1...Be6
- 2.Sb4#
- 1...Sb3
- 2.Sb4#
- 2.Rd6#
- 2.Qxb3#
- 2.Qc4#
- 1...Sc4
- 2.Qd4#
- 2.Qxc4#
- 1...Sb7
- 2.Sb4#
- 2.Qd4#
- 2.Qb3#
- 2.Qc4#
- 1...Sf5
- 2.Sb4#
- 1...Se6
- 2.Sb4#
- 1...Se8
- 2.Sb4#
- 2.Qd4#
- 1...Bxg4+!
- threat
- 1.Qb3+?
- 1...Sc4
- 2.Qxc4#
- 1...Sxb3!
- 1...Sc4
- 1.Bc7?
- Keys
- 1.Bxf4!
- threat
- 2.Qe5#
- 1...Kxe6
- 2.Qe5#
- 1...Rfxe6
- 2.Sb4#
- 1...Rexe6
- 2.Sc7#
- 1...Bxe6
- 2.Sb4#
- 2.e4#
- 1...Sxc6
- 2.Qc4#
- 1...Sxe6
- 2.Se3#
- 2.Sxf6#
- 2.Sb4#
- 2.e4#
- 1...fxe6
- 2.Se3#
- 2.Sb4#
- 2.e4#
- 1...Rf5
- 2.Rd6#
- 1...Sc4
- 2.Qxc4#
- threat
- 1.Bxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(e);N_GUARD::R1(I)
- R(e);SBLOCK,XR(I)::S(G)
- R(g);N_GUARD,XR(I)::S(G)
- R(g);N_GUARD::S(G),XR(g)
- R(g);N_GUARD::S(G)
- B(j);P_PINS(E),SBLOCK,XR(I)::S(G)
- B(j);S_CUTR(g)::S(G)
- S(b);N_GUARD::QAB1(B),XS(b)
- P(h);SBLOCK,XR(I)::S(G)
- Tries
- Try
- B(F);
- Threat
- QAR1(B)
- Vars
- K(c);S_FLIGHT,XR(I)::QAR1(B)
- R(e);SBLOCK,XR(I)::S(G)
- B(j);P_PINS(E),SBLOCK,XR(I)::S(G)
- S(b);N_GUARD,XP(H)::QAB1(B)
- P(h);SBLOCK,XR(I)::S(G)
- R(e);N_GUARD::R1(I)
- S(b);N_GUARD::QAB1(B),XS(b)
- Refutation
- R(g);XR(I)
- Try
- B(F);
- Threat
- QAR1(B)
- Vars
- K(c);S_FLIGHT,XR(I)::QAR1(B)
- R(e);SBLOCK,XR(I)::S(G)
- B(j);P_PINS(E),SBLOCK,XR(I)::S(G)
- S(b);N_GUARD,XP(H)::QAB1(B)
- P(h);SBLOCK,XR(I)::S(G)
- R(e);N_GUARD::R1(I)
- S(b);N_GUARD::QAB1(B),XS(b)
- Refutation
- R(g);XR(I)
- Try
- R(I);P_SPINS(E),XR(e)
- Threat
- DUALS(3)
- Vars
- R(g);N_GUARD,N_PINS(E)::S(G)
- R(g);::QAR1(B)
- R(g);N_PINS(E)::QAR1(B)
- B(j);::S(G)
- S(i);N_PINS(E)::S(G)
- Refutation
- B(j);CHECK,XS(E)
- Try
- Q(B);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
- Refutation
- S(b);XQ(B)
- Try
- Actual
- B(F);XP(a)
- Threat
- QAR1(B)
- Vars
- K(c);S_FLIGHT,XR(I)::QAR1(B)
- R(e);SBLOCK,XR(I)::S(G)
- R(g);N_GUARD,XR(I)::S(G)
- S(b);N_GUARD,XP(H)::QAB1(B)
- R(e);N_GUARD::R1(I)
- S(b);N_GUARD::QAB1(B),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).