MESON Chess Problem Database
Problem Display
PID: 242291 (3R4/1P6/nN2p2K/3Bk1pN/Q2p2P1/R1r5/1B2b3/b1n5 w - - 0 1)
Morra, Juan Carlos
L'Italia Scacchistica, 1964
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rc2
- 2.Re3#
- 2.Qxd4#
- 1...Rxa3
- 2.Qxd4#
- 1...Rb3
- 2.Qxd4#
- 1...Rd3
- 2.Sc4#
- 1...Re3
- 2.Rxe3#
- 2.Qxd4#
- 1...Rf3
- 2.Qxd4#
- 1...Rg3
- 2.Qxd4#
- 1...Rh3
- 2.Qxd4#
- 1...Rc4
- 2.Re3#
- 1...Rc5
- 2.Re3#
- 2.Qxd4#
- 1...Rc6
- 2.Re3#
- 2.Qxd4#
- 1...Rc7
- 2.Re3#
- 2.Qxd4#
- 1...Rc8
- 2.Re3#
- 2.Qxd4#
- 1...Sc5
- 2.b8Q#
- 2.b8B#
- 1...d3
- 2.Qe4#
- 1...exd5
- 2.Qe8#
- 1...Rc2
- Tries
- 1.Sc4+?
- 1...Rxc4
- 2.Re3#
- 1...Bxc4!
- 1...Rxc4
- 1.Qc6?
- threat
- 2.Sd7#
- 2.Qd6#
- 2.Qxe6#
- 1...Rxc6
- 2.Re3#
- 1...exd5
- 2.Re8#
- 2.Qxd5#
- 2.Qe8#
- 1...d3
- 2.Qxc3#
- 1...Sc5
- 2.Qd6#
- 2.Qc7#
- 2.b8Q#
- 2.b8B#
- 1...Sc7
- 2.Sd7#
- 2.Qd6#
- 1...Sb8
- 2.Qd6#
- 2.Qxe6#
- 1...Bxg4!
- threat
- 1.Qd7?
- threat
- 2.Qxe6#
- 2.Qd6#
- 2.Qg7#
- 1...exd5
- 2.Re8#
- 2.Qf5#
- 2.Qe8#
- 2.Qxd5#
- 2.Qe7#
- 1...d3
- 2.Qg7#
- 1...Rf3
- 2.Qxe6#
- 2.Qd6#
- 1...Rc6
- 2.Re3#
- 2.Qg7#
- 1...Rc7
- 2.Re3#
- 2.Qxe6#
- 2.Qd6#
- 1...Sc5
- 2.Qd6#
- 2.Qc7#
- 2.Qg7#
- 2.b8Q#
- 2.b8B#
- 1...Sc7
- 2.Qd6#
- 2.Qg7#
- 1...Bxg4!
- threat
- 1.Qe8?
- threat
- 2.Qxe6#
- 2.Qh8#
- 1...d3
- 2.Qh8#
- 1...Rf3
- 2.Qxe6#
- 1...Rc6
- 2.Re3#
- 2.Qh8#
- 1...Rc7
- 2.Re3#
- 2.Qxe6#
- 1...Sc5
- 2.Qh8#
- 2.b8Q#
- 2.b8B#
- 1...Sc7
- 2.Qh8#
- 1...Bxg4!
- threat
- 1.Sc4+?
- Keys
- 1.Qc2!
- threat
- 2.Qe4#
- 1...Rxc2
- 2.Re3#
- 1...exd5
- 2.Qf5#
- 1...d3
- 2.Qxc3#
- 1...Rd3
- 2.Sc4#
- 1...Re3
- 2.Rxe3#
- 1...Bd3
- 2.Qh2#
- 1...Bf3
- 2.Qh2#
- 1...Sd3
- 2.Qxe2#
- 1...Sc5
- 2.b8Q#
- 2.b8B#
- threat
- 1.Qc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 6
- Sets
- R(d);P_SPINP(e),XR(B)::QAB1(C),XP(e)
- R(d);P_SPINP(e)::QAB1(C),XP(e)
- R(d);N_GUARD,P_SPINP(e),S_CUTB(c)::S(G)
- R(d);P_PINS(F),P_SPINP(e)::QAB1(C),XP(e)
- R(d);OGATE,P_SPINP(e)::R(B)
- S(h);N_GUARD,S_CUTR(d)::P=Q
- P(e);OGATE,P_SPINR(d)::QAR1(C)
- P(i);OGATEB,XB(E)::QAR(C)
- Tries
- Try
- S(G);CHECK
- Vars
- R(d);OGATE,P_SPINP(e),XS(G)::R(B)
- Refutation
- B(c);XS(G)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- R(d);OGATE,P_SPINP(e),XQ(C)::R(B)
- P(e);OGATEB,P_SPINR(d)::QAB(C),XR(d)
- Refutation
- B(c);XP(D)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- P(e);P_SPINR(d)::QAB(C)
- Refutation
- B(c);XP(D)
- Try
- Q(C);P_PINP(i)
- Threat
- DUALS(2)
- Vars
- P(e);P_SPINR(d)::QAB(C)
- R(d);N_SPINP(i),P_SPINP(e)::QAR1(C),XP(i)
- S(h);::QAB(C)
- Refutation
- B(c);XP(D)
- Try
- Actual
- Q(C);
- Threat
- QAR1(C)
- Vars
- R(d);OGATE,P_SPINP(e),XQ(C)::R(B)
- P(i);N_GUARD,XB(E)::QAR1(C)
- P(e);OGATEB,P_SPINR(d)::QAB(C),XR(d)
- R(d);N_GUARD,P_SPINP(e),S_CUTB(c)::S(G)
- R(d);OGATE,P_SPINP(e)::R(B),XR(d)
- B(c);OGATE::QAB(C)
- S(b);N_GUARD,S_CUTR(d)::QAR(C),XB(c)
- S(h);N_GUARD,S_CUTR(d)::P=Q
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).