MESON Chess Problem Database
Problem Display
PID: 242366 (8/b2r1p1K/5R2/2pkB2B/N4P2/3P2Np/1p4b1/1n2Q3 w - - 0 1)
Morra, Juan Carlos
Le Probleme, 1960
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Rxd6#
- 1...Rb7
- 2.Rd6#
- 1...Rc7
- 2.Rd6#
- 1...Re7
- 2.Rd6#
- 1...Rd8
- 2.Bxf7#
- 1...Bf1
- 2.Bf3#
- 2.Qe4#
- 1...Bh1
- 2.Qxh1#
- 1...Bf3
- 2.Bxf3#
- 1...Be4+
- 2.Qxe4#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Rd6
- Tries
- 1.Sf1?
- threat
- 2.Se3#
- 1...Be4+
- 2.Qxe4#
- 1...Bxf1
- 2.Bf3#
- 2.Qe4#
- 1...Rd6
- 2.Rxd6#
- 1...c4!
- threat
- 1.Sf5?
- threat
- 2.Se3#
- 1...Rd6
- 2.Se7#
- 2.Rxd6#
- 1...Be4
- 2.Qxe4#
- 1...c4!
- threat
- 1.Bc7?
- threat
- 2.Qe5#
- 1...Be4+
- 2.Qxe4#
- 1...Rd6
- 2.Rxd6#
- 1...Re7
- 2.Rd6#
- 1...Kd4!
- threat
- 1.Qb4?
- threat
- 2.Qc4#
- 1...Be4+
- 2.Qxe4#
- 2.dxe4#
- 1...Rd6
- 2.Rxd6#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...c4
- 2.Qxc4#
- 2.dxc4#
- 1...cxb4!
- threat
- 1.Qe2?
- 1...Be4+
- 2.Qxe4#
- 2.dxe4#
- 1...Rd6
- 2.Rxd6#
- 1...h2
- 2.Qxg2#
- 1...Rb7
- 2.Rd6#
- 1...Rc7
- 2.Rd6#
- 1...Re7
- 2.Rd6#
- 1...Rd8
- 2.Bxf7#
- 1...Bf1
- 2.Bf3#
- 2.Qf3#
- 2.Qe4#
- 1...Bf3
- 2.Bxf3#
- 2.Qxf3#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...c4
- 2.dxc4#
- 1...Bh1!
- 1...Be4+
- 1.Sf1?
- Keys
- 1.Qf1!
- 1...Be4+
- 2.dxe4#
- 1...Bxf1
- 2.Bf3#
- 1...Rd6
- 2.Rxd6#
- 1...h2
- 2.Qxg2#
- 1...Rb7
- 2.Rd6#
- 1...Rc7
- 2.Rd6#
- 1...Re7
- 2.Rd6#
- 1...Rd8
- 2.Bxf7#
- 1...Bh1
- 2.Qxh1#
- 1...Bf3
- 2.Bxf3#
- 2.Qxf3#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...c4
- 2.dxc4#
- 1...Be4+
- 1.Qf1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(h);N_GUARD::R1(H),XR(h)
- R(h);N_GUARD::R1(H)
- R(h);N_GUARD::B(G),XP(i)
- B(c);OGATEB::QAB(A),XB(c)
- B(c);N_GUARD::B(G),XB(c)
- B(c);CHECK,N_GUARD::QAB1(A),XB(c)
- B(g);N_GUARD::S(D),XB(g)
- B(g);N_GUARD::S(D)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- Tries
- Try
- S(C);
- Threat
- S(C)
- Vars
- B(c);CHECK,N_GUARD::QAB1(A),XB(c)
- R(h);N_GUARD::R1(H),XR(h)
- Refutation
- P(e);
- Try
- S(C);
- Threat
- S(C)
- Vars
- B(c);N_GUARD,P_PINS(C)::QAB1(A),XB(c)
- Refutation
- P(e);
- Try
- B(F);
- Threat
- QAR1(A)
- Vars
- B(c);CHECK,N_GUARD::QAB1(A),XB(c)
- R(h);N_GUARD::R1(H),XR(h)
- R(h);N_GUARD::R1(H)
- Refutation
- K(f);P-FLIGHT
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- R(h);N_GUARD::R1(H),XR(h)
- S(a);N_GUARD::S(D)
- Refutation
- P(e);XQ(A)
- Try
- Q(A);
- Vars
- R(h);N_GUARD::R1(H),XR(h)
- P(d);N_GUARD::QAB(A),XB(c)
- R(h);N_GUARD::R1(H)
- R(h);N_GUARD::B(G),XP(i)
- B(g);N_GUARD::S(D),XB(g)
- B(g);N_GUARD::S(D)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- P(e);OGATE::P(B),XP(e)
- Refutation
- B(c);
- Try
- Actual
- Q(A);
- Vars
- B(c);CHECK,OGATE::P(B),XB(c)
- B(c);N_GUARD,XQ(A)::B(G)
- R(h);N_GUARD::R1(H),XR(h)
- P(d);N_GUARD::QAB(A),XB(c)
- R(h);N_GUARD::R1(H)
- R(h);N_GUARD::B(G),XP(i)
- B(c);OGATEB::QAB(A),XB(c)
- B(g);N_GUARD::S(D),XB(g)
- B(g);N_GUARD::S(D)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- P(e);OGATE::P(B),XP(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).