MESON Chess Problem Database
Problem Display
PID: 83722 (3N4/1K1p1P2/3k1PPq/7R/1p4N1/8/4Pr2/3rbQBB w - - 0 1)
Ellerman, Arnoldo
Xadrez Brasileiro, 1936
#2
11 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.f8Q#
- 2.f8B#
- 1...Qd2
- 2.f8Q#
- 2.f8B#
- 1...Qf4
- 2.f8Q#
- 2.f8B#
- 1...Qg5
- 2.f8Q#
- 2.f8B#
- 1...Qxh5
- 2.f8Q#
- 2.f8B#
- 1...Qxg6
- 2.f8Q#
- 2.f8B#
- 1...Ra1
- 2.Rd5#
- 1...Rb1
- 2.Rd5#
- 1...Rc1
- 2.Rd5#
- 1...Rd5
- 2.Rxd5#
- 1...Rxf1
- 2.Bc5#
- 1...Rxe2
- 2.Bc5#
- 1...Rg2
- 2.Bc5#
- 1...Rh2
- 2.Bc5#
- 1...Rf3
- 2.Bc5#
- 1...Rf4
- 2.Bc5#
- 1...Rxf6
- 2.Bc5#
- 2.Qxf6#
- 1...Bd2
- 2.Rd5#
- 1...Qc1
- Tries
- 1.Sxh6?
- threat
- 2.f8Q#
- 2.f8B#
- 1...Rxf1
- 2.Bc5#
- 2.f8Q#
- 2.f8B#
- 1...Rxe2
- 2.Bc5#
- 1...Rxf6
- 2.Bc5#
- 2.Qxf6#
- 1...Rd5
- 2.Rxd5#
- 2.f8Q#
- 2.f8B#
- 1...Ra1
- 2.Rd5#
- 2.f8Q#
- 2.f8B#
- 1...Rb1
- 2.Rd5#
- 2.f8Q#
- 2.f8B#
- 1...Rc1
- 2.Rd5#
- 2.f8Q#
- 2.f8B#
- 1...Rd2
- 2.f8Q#
- 2.f8B#
- 1...Rd3
- 2.f8Q#
- 2.f8B#
- 1...Rd4
- 2.f8Q#
- 2.f8B#
- 1...Rg2
- 2.Bc5#
- 2.Qf4#
- 2.f8Q#
- 2.f8B#
- 1...Rh2
- 2.Bc5#
- 2.Qf4#
- 2.f8Q#
- 2.f8B#
- 1...Rf3
- 2.Bc5#
- 2.f8Q#
- 2.f8B#
- 1...Rf4
- 2.Bc5#
- 2.Qxf4#
- 2.f8Q#
- 2.f8B#
- 1...Bd2
- 2.Rd5#
- 2.f8Q#
- 2.f8B#
- 1...Bc3
- 2.f8Q#
- 2.f8B#
- 1...b3
- 2.f8Q#
- 2.f8B#
- 1...Rf5!
- threat
- 1.Sxh6?
- Keys
- 1.e4!
- threat
- 2.Qa6#
- 1...Qxh5
- 2.f8Q#
- 2.f8B#
- 1...Rxf1
- 2.Bc5#
- 2.e5#
- 1...Rxf6
- 2.Bc5#
- 2.Qxf6#
- 1...Qg5
- 2.f8Q#
- 2.f8B#
- 1...Rd5
- 2.Rxd5#
- 1...Qc1
- 2.f8Q#
- 2.f8B#
- 1...Qe3
- 2.f8Q#
- 2.f8B#
- 1...Ra1
- 2.Rd5#
- 2.Qd3#
- 1...Rc1
- 2.Rd5#
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 1...Ra2
- 2.Bc5#
- 2.e5#
- 1...Rc2
- 2.e5#
- 1...Re2
- 2.Bc5#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(f);N_GUARD::P=Q
- Q(f);N_GUARD,XR(F)::P=Q
- Q(f);N_GUARD,XP(H)::P=Q
- R(a);N_GUARD::R1(F)
- R(a);N_GUARD::R1(F),XR(a)
- R(c);OGATE,XQ(A)::B(B)
- R(c);OGATE,XP(D)::B(B)
- R(c);OGATE::B(B)
- B(b);S_CUTR(a)::R1(F)
- Tries
- Try
- S(E);XQ(f)
- Threat
- P=Q
- Vars
- R(c);OGATE,XP(D)::B(B)
- R(a);::P=Q
- B(b);::P=Q
- P(d);::P=Q
- Refutation
- R(c);
- Try
- Actual
- P(D);
- Threat
- QAR(A)
- Vars
- Q(f);N_GUARD,XR(F)::P=Q
- Q(f);N_GUARD::P=Q
- R(a);N_GUARD::R1(F),XR(a)
- R(a);N_GUARD::QAR(A),XR(a)
- R(c);::P(D)
- R(c);OGATE::B(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).