MESON Chess Problem Database
Problem Display
PID: 83763 (7n/Qp1K4/B4R1B/3R4/pN1pk2p/r7/1bb1N3/3n4 w - - 0 1)
Ellerman, Arnoldo
Magasinet, 1949
#2
8 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Qxd4#
- 1...Re3
- 2.Rf4#
- 1...Rf3
- 2.Re6#
- 1...Bc1
- 2.Qxd4#
- 1...Bb3
- 2.Bd3#
- 1...Sc3
- 2.Qxd4#
- 1...Se3
- 2.Rf4#
- 1...d3
- 2.Rf4#
- 1...Rc3
- Tries
- 1.Sc3+?
- 1...Rxc3
- 2.Qxd4#
- 1...Sxc3
- 2.Qxd4#
- 1...dxc3
- 2.Rf4#
- 2.Qd4#
- 1...Bxc3!
- 1...Rxc3
- 1.Bxb7?
- threat
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rdf5#
- 2.Rh5#
- 1...Rc3
- 2.Rc5#
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Se3
- 2.Rf4#
- 1...Bb3!
- threat
- 1.Bc1?
- threat
- 2.Rf4#
- 1...Bxc1
- 2.Qxd4#
- 1...Rf3
- 2.Re6#
- 1...Sg6!
- threat
- 1.Bd2?
- threat
- 2.Rf4#
- 1...Rf3
- 2.Re6#
- 1...Sg6!
- threat
- 1.Rxd4+?
- 1...Bxd4
- 2.Qxd4#
- 1...Ke5!
- 1...Bxd4
- 1.Ra5?
- threat
- 2.Bxb7#
- 2.Qxb7#
- 1...bxa6
- 2.Qb7#
- 2.Qa8#
- 1...Rc3
- 2.Qxd4#
- 1...Bb3
- 2.Bd3#
- 1...Sc3
- 2.Qxd4#
- 1...Se3
- 2.Rf4#
- 1...b6
- 2.Bb7#
- 2.Qb7#
- 2.Qa8#
- 1...b5!
- threat
- 1.Rb5?
- threat
- 2.Bxb7#
- 2.Qxb7#
- 1...bxa6
- 2.Qb7#
- 2.Qa8#
- 1...Rc3
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Se3
- 2.Rf4#
- 1...b6
- 2.Bb7#
- 2.Qb7#
- 2.Qa8#
- 1...Bb3!
- threat
- 1.Rc5?
- threat
- 2.Bxb7#
- 2.Qxb7#
- 1...bxa6
- 2.Qb7#
- 2.Qa8#
- 1...Bb3
- 2.Bd3#
- 1...Se3
- 2.Rf4#
- 1...b5
- 2.Bb7#
- 2.Qb7#
- 2.Qa8#
- 1...b6
- 2.Bb7#
- 2.Qb7#
- 2.Qa8#
- 1...Sc3!
- threat
- 1.Rdf5?
- threat
- 2.Bxb7#
- 2.Qxb7#
- 1...bxa6
- 2.Qb7#
- 2.Qa8#
- 1...Rc3
- 2.Qxd4#
- 1...Bb3
- 2.Bd3#
- 1...Sc3
- 2.Qxd4#
- 1...b5
- 2.Bb7#
- 2.Qb7#
- 2.Qa8#
- 1...b6
- 2.Bb7#
- 2.Qb7#
- 2.Qa8#
- 1...Se3!
- threat
- 1.Qb8?
- threat
- 2.Re5#
- 2.Qf4#
- 2.Qe5#
- 2.Qe8#
- 1...Rf3
- 2.Re5#
- 2.Re6#
- 2.Qe5#
- 2.Qe8#
- 1...Bc1
- 2.Rxd4#
- 2.Re5#
- 2.Qe5#
- 2.Qe8#
- 1...Sf7
- 2.Qf4#
- 1...d3
- 2.Qf4#
- 1...Sg6!
- threat
- 1.Qxb7?
- threat
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rdf5#
- 2.Rh5#
- 1...Rc3
- 2.Rc5#
- 1...Bb3
- 2.Bd3#
- 1...Se3
- 2.Rf4#
- 1...Sc3!
- threat
- 1.Sc3+?
- Keys
- 1.Rh5!
- threat
- 2.Bxb7#
- 2.Qxb7#
- 1...bxa6
- 2.Qb7#
- 2.Qa8#
- 1...Rc3
- 2.Qxd4#
- 1...Bb3
- 2.Bd3#
- 1...Sc3
- 2.Qxd4#
- 1...Se3
- 2.Rf4#
- 1...b5
- 2.Bb7#
- 2.Qb7#
- 2.Qa8#
- 1...b6
- 2.Bb7#
- 2.Qb7#
- 2.Qa8#
- threat
- 1.Rh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- R(d);S_CUTB(b)::QAR1(G),XP(f)
- R(d);SBLOCK::R1(E)
- R(d);SBLOCK::R(E)
- B(b);N_GUARD::QAR1(G),XP(f)
- B(c);N_GUARD,S_CUTR(d)::B(D)
- S(a);S_CUTB(b)::QAR1(G),XP(f)
- S(a);SBLOCK::R1(E)
- P(f);::R1(E)
- Tries
- Try
- S(A);CHECK
- Vars
- R(d);XS(A)::QAR1(G),XP(f)
- S(a);XS(A)::QAR1(G),XP(f)
- Refutation
- B(b);XS(A)
- Try
- B(D);XP(i)
- Threat
- DUALS(5)
- Vars
- S(a);S_CUTB(b)::QAR1(G),XP(f)
- S(a);SBLOCK::R1(E)
- Refutation
- B(c);
- Try
- B(F);
- Threat
- R1(E)
- Vars
- B(b);N_GUARD,XB(F)::QAR1(G),XP(f)
- R(d);SBLOCK::R(E)
- Refutation
- S(j);
- Try
- B(F);
- Threat
- R1(E)
- Vars
- R(d);SBLOCK::R(E)
- Refutation
- S(j);
- Try
- R(C);CHECK,XP(f)
- Vars
- B(b);OGATE,XR(C)::QAR1(G),XB(b)
- Refutation
- K(g);P-FLIGHT
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(d);S_CUTB(b)::QAR1(G),XP(f)
- B(c);N_GUARD,S_CUTR(d)::B(D)
- S(a);S_CUTB(b)::QAR1(G),XP(f)
- S(a);SBLOCK::R1(E)
- Refutation
- P(i);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(d);S_CUTB(b)::QAR1(G),XP(f)
- S(a);S_CUTB(b)::QAR1(G),XP(f)
- S(a);SBLOCK::R1(E)
- Refutation
- B(c);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- B(c);N_GUARD,S_CUTR(d)::B(D)
- S(a);SBLOCK::R1(E)
- Refutation
- S(a);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(d);S_CUTB(b)::QAR1(G),XP(f)
- B(c);N_GUARD,S_CUTR(d)::B(D)
- S(a);S_CUTB(b)::QAR1(G),XP(f)
- Refutation
- S(a);
- Try
- Q(G);
- Threat
- DUALS(4)
- Vars
- S(j);::QAR1(G)
- P(f);::QAR1(G)
- Refutation
- S(j);
- Try
- Q(G);XP(i)
- Threat
- DUALS(5)
- Vars
- R(d);::QAB(G)+R(C)
- B(c);N_GUARD,S_CUTR(d)::B(D)
- S(a);SBLOCK::R1(E)
- Refutation
- S(a);
- Try
- Actual
- R(C);
- Threat
- DUALS(2)
- Vars
- R(d);S_CUTB(b)::QAR1(G),XP(f)
- B(c);N_GUARD,S_CUTR(d)::B(D)
- S(a);S_CUTB(b)::QAR1(G),XP(f)
- S(a);SBLOCK::R1(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).