MESON Chess Problem Database
Problem Display
PID: 227117 (2N1B1r1/5q2/pN1R2p1/Qbk2p2/p1P1rR2/p2pp1K1/1n6/2B5 w - - 0 1)
Morra, Juan Carlos
Oudot, Jean
Comm., Europe Echecs, 1960/III
#2
9 + 13
| 15601 | Albrecht-Leiss-Degener Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxc4
- 2.Sd7#
- 1...Qd5
- 2.Rxd5#
- 1...Qf6
- 2.Rd5#
- 1...Qa7
- 2.Rd5#
- 1...Qc7
- 2.Rd5#
- 1...Qe7
- 2.Rd5#
- 1...Qg7
- 2.Rd5#
- 1...Qh7
- 2.Rd5#
- 1...Qf8
- 2.Rd5#
- 1...Rxc4
- 2.Rc6#
- 1...Rd4
- 2.Rc6#
- 1...Re5
- 2.Rc6#
- 1...Re6
- 2.Rd5#
- 1...Re7
- 2.Rc6#
- 1...Sd1
- 2.Bxa3#
- 1...Sxc4
- 2.Sxa4#
- 1...Qxc4
- Tries
- 1.Sxa4+?
- 1...Kxc4
- 2.Bxf7#
- 2.Qc3#
- 1...Sxa4!
- 1...Kxc4
- 1.Sd7+?
- 1...Kxc4
- 2.Bxf7#
- 1...Qxd7!
- 1...Kxc4
- 1.Bxb2?
- threat
- 2.Bxa3#
- 2.Rc6#
- 1...Qxc4
- 2.Sd7#
- 2.Rc6#
- 1...Qxe8
- 2.Bxa3#
- 1...Rxc4
- 2.Rc6#
- 1...Rexe8
- 2.Sxa4#
- 2.Bxa3#
- 2.Bd4#
- 1...Rgxe8
- 2.Bxa3#
- 1...Qd5
- 2.Rxd5#
- 1...Qe6
- 2.Bxa3#
- 1...Qf6
- 2.Bxa3#
- 2.Rd5#
- 1...Qb7
- 2.Bxa3#
- 1...Qc7
- 2.Bxa3#
- 2.Rd5#
- 1...Qd7
- 2.Bxa3#
- 1...Re6
- 2.Sxa4#
- 2.Bxa3#
- 2.Bd4#
- 2.Rd5#
- 1...a2
- 2.Ba3#
- 2.Rc6#
- 1...axb2!
- threat
- 1.Bd2?
- threat
- 2.Bb4#
- 2.Qb4#
- 1...Qxc4
- 2.Sd7#
- 1...Rxc4
- 2.Rc6#
- 1...Qd5
- 2.Rxd5#
- 1...exd2!
- threat
- 1.Bxe3+?
- 1...Rd4
- 2.Bxd4#
- 2.Rc6#
- 1...Rxe3+!
- 1...Rd4
- 1.Bxb5?
- threat
- 2.Bxa4#
- 2.Bxa6#
- 2.Bc6#
- 2.Bd7#
- 2.Be8#
- 1...Qxc4
- 2.Sd7#
- 2.Bxc4#
- 1...Sxc4
- 2.Sxa4#
- 2.Bxc4#
- 1...axb5
- 2.Qxb5#
- 1...Qd5
- 2.Rxd5#
- 1...Qe8
- 2.Bc6#
- 2.Bd7#
- 2.Bxe8#
- 2.Rd5#
- 1...Qd7
- 2.Sxd7#
- 2.Bc6#
- 2.Bxd7#
- 1...Ree8
- 2.Bxa4#
- 2.Bxa6#
- 2.Bc6#
- 2.Bd7#
- 2.Bxe8#
- 2.Rc6#
- 1...Rge8
- 2.Bxa4#
- 2.Bxa6#
- 2.Bc6#
- 2.Bd7#
- 2.Bxe8#
- 1...Rxc8!
- threat
- 1.Rxe4?
- threat
- 2.Bxe3#
- 2.Rc6#
- 1...Qxc4
- 2.Sd7#
- 2.Rc6#
- 1...Qxe8
- 2.Bxe3#
- 1...Rxe8
- 2.Bxe3#
- 1...Sxc4
- 2.Sxa4#
- 2.Rc6#
- 1...fxe4
- 2.Bxe3#
- 1...Qd5
- 2.Sd7#
- 2.Rxd5#
- 1...Qe6
- 2.Bxe3#
- 1...Qf6
- 2.Sd7#
- 2.Rd5#
- 1...Qb7
- 2.Bxe3#
- 1...Qc7
- 2.Bxe3#
- 2.Re5#
- 1...Qd7
- 2.Sxd7#
- 2.Bxe3#
- 2.Re5#
- 1...Qg7
- 2.Rd5#
- 2.Rc6#
- 1...Sd1
- 2.Sxa4#
- 2.Bxa3#
- 2.Rc6#
- 1...d2
- 2.Rc6#
- 1...e2
- 2.Be3#
- 2.Rc6#
- 1...f4+!
- threat
- 1.Sxa4+?
- Keys
- 1.Qc3!
- threat
- 2.Qxa3#
- 1...Qxc4
- 2.Rd5#
- 1...Rxc4
- 2.Bxe3#
- 1...Sxc4
- 2.Bxa3#
- 1...Qd5
- 2.Rxd5#
- 1...a2
- 2.Qa3#
- threat
- 1.Qc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(l);N_GUARD,SBLOCK,XP(C)::S(F)
- Q(l);N_GUARD::R1(G),XQ(l)
- Q(l);N_GUARD::R1(G)
- R(f);XP(C)::R1(G)
- R(f);::R1(G)
- R(f);S_CUTQ(l)::R1(G)
- S(a);OGATE::B(A),XP(b)
- S(a);N_GUARD,SBLOCK,XP(C)::S(F),XP(e)
- Tries
- Try
- S(F);CHECK,XP(e)
- Refutation
- S(a);XS(F)
- Try
- S(F);CHECK
- Vars
- K(h);N_SPINB(g),P-FLIGHT,P_SPINR(f),XP(C)::B(I),XQ(l)
- Refutation
- Q(l);XS(F)
- Try
- B(A);XS(a)
- Threat
- DUALS(2)
- Vars
- Q(l);XB(I)::B(A),XP(b)
- R(f);XP(C)::R1(G)
- R(m);XB(I)::B(A),XP(b)
- Q(l);N_GUARD::R1(G),XQ(l)
- Q(l);::B(A),XP(b)
- Refutation
- P(b);XB(A)
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- Q(l);N_GUARD,SBLOCK,XP(C)::S(F)
- R(f);XP(C)::R1(G)
- Q(l);N_GUARD::R1(G),XQ(l)
- Refutation
- P(d);XB(A)
- Try
- B(A);CHECK,XP(d)
- Refutation
- R(f);CHECK,XB(A)
- Try
- B(I);XB(g)
- Threat
- DUALS(5)
- Vars
- P(j);OGATE,P_SPINP(j),XB(I)::QAR1(E),XP(j)
- Q(l);N_GUARD::R1(G),XQ(l)
- Refutation
- R(m);XS(H)
- Try
- R(D);XR(f)
- Threat
- DUALS(2)
- Vars
- Q(l);XB(I)::B(A),XP(d)
- R(m);XB(I)::B(A),XP(d)
- P(i);XR(D)::B(A),XP(d)
- Q(l);::B(A),XP(d)
- P(c);::R1(G)
- Refutation
- P(i);CHECK
- Try
- Actual
- Q(E);N_PINB(g)
- Threat
- QAB(E),XP(b)
- Vars
- Q(l);N_GUARD,P_SPINQ(l),XP(C)::R1(G)
- R(f);N_GUARD,P_SPINR(f),XP(C)::B(A),XP(d)
- S(a);OGATE,P_SPINS(a),XP(C)::B(A),XP(b)
- Q(l);N_GUARD::R1(G),XQ(l)
- P(b);::QAB(E)
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).