MESON Chess Problem Database
Problem Display
PID: 233858 (6nK/2Q3N1/RB2bk2/6pB/5q2/8/2n5/2b2R2 w - - 0 1)
Ellerman, Arnoldo
Skakbladet, 1946
#2
7 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.Se8#
- 1...Ba2
- 2.Bd4#
- 1...Bb3
- 2.Bd4#
- 1...Bh3
- 2.Bd4#
- 1...Bc4
- 2.Bd4#
- 1...Bg4
- 2.Bd4#
- 1...Bd5
- 2.Bd4#
- 1...Bf5
- 2.Bd4#
- 1...Bf7
- 2.Bd4#
- 1...Bc8
- 2.Bd4#
- 1...Sa1
- 2.Bd4#
- 1...Se1
- 2.Bd4#
- 1...Sa3
- 2.Bd4#
- 1...Se3
- 2.Bd4#
- 1...Sb4
- 2.Bd4#
- 1...Sd4
- 2.Bxd4#
- 1...Qf5
- Tries
- 1.Bg1?
- threat
- 2.Rxe6#
- 1...Sd4
- 2.Bxd4#
- 1...g4!
- threat
- 1.Be3?
- threat
- 2.Rxe6#
- 1...Sd4
- 2.Bxd4#
- 1...g4!
- threat
- 1.Bc5?
- threat
- 2.Rxe6#
- 1...Sd4
- 2.Bxd4#
- 1...g4!
- threat
- 1.Ba7?
- threat
- 2.Rxe6#
- 1...Sd4
- 2.Bxd4#
- 1...g4!
- threat
- 1.Ra5?
- threat
- 2.Se8#
- 1...Bd7
- 2.Qe5#
- 1...Ba2
- 2.Qe5#
- 1...Bb3
- 2.Qe5#
- 1...Bh3
- 2.Qe5#
- 2.Qf7#
- 1...Bc4
- 2.Qe5#
- 1...Bg4
- 2.Qe5#
- 2.Qf7#
- 1...Bf5
- 2.Qf7#
- 1...Bf7
- 2.Qe5#
- 2.Qxf7#
- 1...Bc8
- 2.Qe5#
- 2.Qf7#
- 1...Bd5!
- threat
- 1.Qd6?
- threat
- 2.Qxe6#
- 1...Sd4
- 2.Bxd4#
- 1...g4!
- threat
- 1.Qc5?
- threat
- 2.Se8#
- 1...Ba2
- 2.Bd8#
- 1...Bb3
- 2.Bd8#
- 1...Bh3
- 2.Bd8#
- 1...Bc4
- 2.Bd8#
- 1...Bg4
- 2.Bd8#
- 1...Bf5
- 2.Bd8#
- 1...Bd7
- 2.Bd8#
- 1...Bf7
- 2.Bd8#
- 1...Bc8
- 2.Bd8#
- 1...Bd5!
- threat
- 1.Qf7+?
- 1...Ke5
- 2.Qxe6#
- 1...Bxf7!
- 1...Ke5
- 1.Bg1?
- Keys
- 1.Bf2!
- threat
- 2.Rxe6#
- 1...Qd6
- 2.Bd4#
- 1...g4
- 2.Bh4#
- 1...Qe3
- 2.Bxe3#
- 1...Qe5
- 2.Qf7#
- 1...Qc4
- 2.Bd4#
- 1...Qe4
- 2.Bd4#
- 1...Qg4
- 2.Bd4#
- 1...Qf5
- 2.Se8#
- 1...Sd4
- 2.Bxd4#
- threat
- 1.Bf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 14
- Sets
- Q(c);::S(F)
- B(e);::R(C)+B(D),DCHECK
- B(e);N_SPINQ(c)::R(C)+B(D),DCHECK
- S(b);N_GUARD::B(D)
- S(b);N_GUARD::B(D),XS(b)
- Tries
- Try
- B(D);P_PINB(e)
- Threat
- R1(C),XB(e)
- Vars
- S(b);N_GUARD::B(D),XS(b)
- Refutation
- P(d);
- Try
- B(D);P_PINB(e)
- Threat
- R1(C),XB(e)
- Vars
- S(b);N_GUARD::B(D),XS(b)
- Refutation
- P(d);
- Try
- B(D);P_PINB(e)
- Threat
- R1(C),XB(e)
- Vars
- S(b);N_GUARD::B(D),XS(b)
- Refutation
- P(d);
- Try
- B(D);P_PINB(e)
- Threat
- R1(C),XB(e)
- Vars
- S(b);N_GUARD::B(D),XS(b)
- Refutation
- P(d);
- Try
- R(C);
- Threat
- S(F)
- Vars
- B(e);::QAB1(E)
- B(e);N_GUARD,N_SPINQ(c)::QAR1(E)
- Refutation
- B(e);
- Try
- Q(E);P_PINB(e)
- Threat
- QAR1(E),XB(e)
- Vars
- S(b);N_GUARD::B(D),XS(b)
- Refutation
- P(d);
- Try
- Q(E);
- Threat
- S(F)
- Vars
- B(e);::R(C)+B(D),DCHECK
- B(e);N_SPINQ(c)::R(C)+B(D),DCHECK
- Refutation
- B(e);
- Try
- Q(E);CHECK
- Vars
- K(f);N_SPINQ(c),S_FLIGHT::QAR1(E),XB(e)
- Refutation
- B(e);XQ(E)
- Try
- Actual
- B(D);N_PINQ(c),P_PINB(e)
- Threat
- R1(C),XB(e)
- Vars
- Q(c);N_SPINB(e)::R(A)+B(D),DCHECK
- P(d);OGATEB::B(D)
- Q(c);OGATEB::R(A)+B(D),XQ(c)
- Q(c);SBLOCK::QAR1(E)
- Q(c);::R(A)+B(D),DCHECK
- Q(c);SBLOCK::S(F)
- S(b);N_GUARD::B(D),XS(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).