MESON Chess Problem Database
Problem Display
PID: 198668 (3R4/r1BK3B/bpR5/P6Q/1p1k4/6N1/1nP2P2/4rN2 w - - 0 1)
Carra, Arturo
3rd Prize, L'Alfiere di Re, 1921
#2
11 + 7
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Qe5#
- 1...Rb1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Qe5#
- 1...Rc1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Qe5#
- 1...Rd1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Qe5#
- 1...Rxf1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Qe5#
- 1...Re3
- 2.fxe3#
- 1...Re5
- 2.Qxe5#
- 1...Re6
- 2.Kxe6#
- 1...Re7+
- 2.Kxe7#
- 1...Re8
- 2.Kxe8#
- 1...Rb7
- 2.Kc8#
- 1...Rxc7+
- 2.Kxc7#
- 1...Ra8
- 2.Bxb6#
- 1...Bxf1
- 2.Kc8#
- 1...Be2
- 2.Ke6#
- 2.Ke7#
- 2.Kc8#
- 2.Ke8#
- 2.Qe5#
- 1...Bd3
- 2.Kc8#
- 1...Bb5
- 2.Kc8#
- 1...Bb7
- 2.Bxb6#
- 1...Bc8+
- 2.Kxc8#
- 1...b3
- 2.c3#
- 1...bxa5
- 2.Qc5#
- 1...b5
- 2.Qc5#
- 1...Ra1
- Tries
- 1.Se2+?
- 1...Bxe2
- 2.Ke6#
- 2.Ke7#
- 2.Kc8#
- 2.Ke8#
- 2.Qe5#
- 1...Rxe2!
- 1...Bxe2
- 1.Sf5+?
- 1...Ke4
- 2.Qh1#
- 1...Kd5!
- 1...Ke4
- 1.Qg4+?
- 1...Re4
- 2.Qxe4#
- 1...Kd5!
- 1...Re4
- 1.Qh4+?
- 1...Re4
- 2.Qxe4#
- 1...Kd5!
- 1...Re4
- 1.Se2+?
- Keys
- 1.Qb5!
- 1...Re7+
- 2.Kxe7#
- 1...Rxc7+
- 2.Kxc7#
- 1...Bc8+
- 2.Kxc8#
- 1...Rxf1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Se2#
- 2.Qe5#
- 1...Bxb5
- 2.Kc8#
- 1...bxa5
- 2.Qc5#
- 1...Sc4
- 2.Rxc4#
- 1...Ra1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Se2#
- 2.Qe5#
- 1...Rb1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Se2#
- 2.Qe5#
- 1...Rc1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Se2#
- 2.Qe5#
- 1...Rd1
- 2.Ke6#
- 2.Ke7#
- 2.Ke8#
- 2.Se2#
- 2.Qe5#
- 1...Re2
- 2.Sxe2#
- 1...Re3
- 2.fxe3#
- 1...Re4
- 2.Sf5#
- 1...Re5
- 2.Qxe5#
- 1...Re6
- 2.Kxe6#
- 1...Re8
- 2.Kxe8#
- 1...Rb7
- 2.Kc8#
- 1...Ra8
- 2.Bxb6#
- 1...Bb7
- 2.Bxb6#
- 1...Sd1
- 2.Rc4#
- 1...Sd3
- 2.Rc4#
- 1...Sa4
- 2.Rc4#
- 1...b3
- 2.c3#
- 1...Re7+
- 1.Qb5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- R(a);OGATE::P(C),XR(a)
- R(a);N_GUARD::QAB1(F),XR(a)
- R(a);::R(K)+K(I),XR(a)
- R(a);CHECK::R(K)+K(I),XR(a)
- R(g);::R(K)+K(I)
- R(g);CHECK,XB(H)::R(K)+K(I),XR(g)
- R(g);N_PINB(H)::B(H),XP(f)
- B(e);XS(A)::R(K)+K(I)
- B(e);::R(K)+K(I)
- B(e);P_PINR(G)::R(K)+K(I)
- B(e);N_PINB(H)::B(H),XP(f)
- B(e);CHECK::R(K)+K(I),XB(e)
- P(c);N_GUARD::P(B)
- P(f);N_GUARD,XP(E)::QAB1(F)
- P(f);N_GUARD::QAB1(F)
- Tries
- Try
- S(D);CHECK
- Refutation
- R(a);XS(D)
- Try
- S(D);CHECK
- Vars
- K(d);P-FLIGHT::QAB(F)
- Refutation
- K(d);P-FLIGHT
- Try
- Q(F);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAR1(F),XR(a)
- Refutation
- K(d);P-FLIGHT
- Try
- Q(F);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAR1(F),XR(a)
- Refutation
- K(d);P-FLIGHT
- Try
- Actual
- Q(F);
- Vars
- R(a);CHECK::R(K)+K(I),XR(a)
- R(g);CHECK,XB(H)::R(K)+K(I),XR(g)
- B(e);CHECK::R(K)+K(I),XB(e)
- B(e);P_PINR(G),XQ(F)::R(K)+K(I)
- P(f);N_GUARD,XP(E)::QAB1(F)
- S(b);N_GUARD::R1(G),XS(b)
- R(a);N_GUARD::S(D),XR(a)
- R(a);OGATE::P(C),XR(a)
- R(a);SBLOCK::S(D)
- R(a);N_GUARD::QAB1(F),XR(a)
- R(a);::R(K)+K(I),XR(a)
- R(g);::R(K)+K(I)
- R(g);N_PINB(H)::B(H),XP(f)
- B(e);N_PINB(H)::B(H),XP(f)
- S(b);N_GUARD::R1(G)
- P(c);N_GUARD::P(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).