MESON Chess Problem Database
Problem Display
PID: 83861 (1K2R1B1/Q5bp/3p4/2p5/2PkbN2/1R2Np2/8/6rq w - - 0 1)
Roura, Juan R
Good Companions, 1920
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxg7#
- 1...Rb1
- 2.Qxg7#
- 1...Rc1
- 2.Qxg7#
- 1...Rd1
- 2.Qxg7#
- 1...Re1
- 2.Qxg7#
- 1...Rf1
- 2.Qxg7#
- 1...Bb1
- 2.Qa1#
- 1...Bc2
- 2.Sxc2#
- 1...Bd3
- 2.Rxd3#
- 1...Bd5
- 2.Rd3#
- 1...Bf5
- 2.Sxf5#
- 1...Bc6
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Bg6
- 2.Qxg7#
- 1...Bb7
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Ba8
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Be5
- 2.Se6#
- 1...f2
- 2.Se2#
- 1...Ra1
- Tries
- 1.Qb7?
- threat
- 2.Rxe4#
- 2.Qxe4#
- 1...Bxb7
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Bb1
- 2.Qd5#
- 1...Bc2
- 2.Sxc2#
- 2.Qd5#
- 1...Bd3
- 2.Rxd3#
- 2.Qd5#
- 1...Bd5
- 2.Rd3#
- 2.Qxd5#
- 1...Bf5
- 2.Sxf5#
- 2.Qd5#
- 1...Bc6
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Bg6
- 2.Qd5#
- 2.Qxg7#
- 1...Be5
- 2.Se6#
- 1...f2
- 2.Se2#
- 1...d5!
- threat
- 1.Qe7?
- threat
- 2.Qxe4#
- 1...Bb1
- 2.Qxd6#
- 1...Bc2
- 2.Sxc2#
- 2.Qxd6#
- 1...Bd3
- 2.Rxd3#
- 2.Qxd6#
- 1...Bd5
- 2.Rd3#
- 1...Bf5
- 2.Sxf5#
- 2.Qxd6#
- 1...Bc6
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Bg6
- 2.Qxd6#
- 2.Qxg7#
- 1...Bb7
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Ba8
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Be5
- 2.Se6#
- 1...f2
- 2.Se2#
- 1...d5!
- threat
- 1.Qa8?
- threat
- 2.Rxe4#
- 2.Qxe4#
- 1...Bxa8
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Bb1
- 2.Qd5#
- 2.Qa1#
- 1...Bc2
- 2.Sxc2#
- 2.Qd5#
- 1...Bd3
- 2.Rxd3#
- 2.Qd5#
- 1...Bd5
- 2.Rd3#
- 2.Qxd5#
- 1...Bf5
- 2.Sxf5#
- 2.Qd5#
- 1...Bc6
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Bg6
- 2.Qd5#
- 1...Bb7
- 2.Sc2#
- 2.Sf5#
- 2.Rd3#
- 1...Be5
- 2.Se6#
- 1...f2
- 2.Se2#
- 1...d5!
- threat
- 1.Qb7?
- Keys
- 1.Bd5!
- threat
- 2.Rxe4#
- 1...Bxd5
- 2.Rd3#
- 1...Bb1
- 2.Qa1#
- 1...Bc2
- 2.Sxc2#
- 1...Bd3
- 2.Rxd3#
- 1...Bf5
- 2.Sxf5#
- 1...Bg6
- 2.Qxg7#
- 1...Be5
- 2.Se6#
- 1...f2
- 2.Se2#
- threat
- 1.Bd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::QAB(E),XB(h)
- R(a);N_GUARD,P_PINR(A)::QAB(E),XB(h)
- B(e);S_CUTR(a)::QAB(E)
- B(e);N_GUARD::S(B),XB(e)
- B(e);N_GUARD::R1(A),XB(e)
- B(e);N_GUARD::R1(A)
- B(e);S_CUTR(a)::QAB(E),XB(h)
- B(h);SBLOCK::S(D)
- P(c);N_GUARD::S(D)
- Tries
- Try
- Q(E);N_PINP(f)
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD::QAR1(E)
- B(h);SBLOCK::S(D)
- P(c);N_GUARD::S(D)
- Refutation
- P(g);
- Try
- Q(E);N_PINP(f)
- Threat
- QAR1(E),XB(e)
- Vars
- B(e);N_GUARD::QAR2(E),XP(g)
- B(e);N_GUARD::R1(A)
- B(h);SBLOCK::S(D)
- P(c);N_GUARD::S(D)
- Refutation
- P(g);
- Try
- Q(E);N_PINP(f)
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD::QAR1(E)
- B(h);SBLOCK::S(D)
- P(c);N_GUARD::S(D)
- Refutation
- P(g);
- Try
- Actual
- B(H);
- Threat
- R1(G),XB(e)
- Vars
- B(e);N_GUARD,XB(H)::R1(A)
- B(e);S_CUTR(a)::QAB(E)
- B(e);N_GUARD::S(B),XB(e)
- B(e);N_GUARD::R1(A),XB(e)
- B(e);S_CUTR(a)::QAB(E),XB(h)
- B(h);SBLOCK::S(D)
- P(c);N_GUARD::S(D)
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).