MESON Chess Problem Database
Problem Display
PID: 227613 (5N2/6Np/qnppB2K/1Qp1k3/5R2/1b2P3/7B/8 w - - 0 1)
Nemo, Ottmar (Weiss, Ottmar)
Shakhmaty, 1926
#2
8 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Qb2#
- 1...Ba2
- 2.Qb2#
- 1...Bc2
- 2.Qb2#
- 1...Ba4
- 2.Qb2#
- 1...Bc4
- 2.Qb2#
- 1...Bd5
- 2.Qb2#
- 1...Sa4
- 2.Sd7#
- 1...Sc4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sa8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- 1...Bd1
- Tries
- 1.Qd3?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Qe4#
- 2.Qf5#
- 2.Qc3#
- 1...Bxe6
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Qe4#
- 1...d5
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 1...Qa2
- 2.Rf2#
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 2.Qc3#
- 1...Qc4
- 2.Rf5#
- 2.Qf5#
- 1...Qa1
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Qe4#
- 2.Qf5#
- 1...Qa4
- 2.Rf5#
- 2.Qf5#
- 1...Qa5
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Qe4#
- 2.Qf5#
- 1...Bc2
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Qc3#
- 1...Bd5
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Qf5#
- 2.Qc3#
- 1...Sa4
- 2.Sd7#
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Qe4#
- 2.Qf5#
- 1...Sd5
- 2.Sd7#
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 1...Qxd3!
- threat
- 1.Qxc6?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Qe4#
- 1...Qa2
- 2.Rf2#
- 2.Rf5#
- 2.Qe4#
- 1...Qf1
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Qe4#
- 1...Qe2
- 2.Rf2#
- 2.Rf5#
- 2.Qe4#
- 1...Qd3
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 1...Qc4
- 2.Rf5#
- 1...Qb7
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 1...Qa4
- 2.Rf5#
- 1...Qa8
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 1...Bc2
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 1...Sd5
- 2.Sd7#
- 1...d5
- 2.Qc7#
- 1...Bd5!
- threat
- 1.Qd3?
- Keys
- 1.Bd5!
- threat
- 2.Rf5#
- 1...Kxd5
- 2.Rd4#
- 1...Bxd5
- 2.Qb2#
- 1...Sxd5
- 2.Sd7#
- 1...cxd5
- 2.Qe8#
- threat
- 1.Bd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- B(a);OGATE::QAB(D)
- B(a);N_SPINP(b),OGATE::QAB(D)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD,N_SPINP(b)::S(H)
- S(e);N_GUARD::S(H),XS(e)
- Tries
- Try
- Q(D);N_PINP(b)
- Threat
- DUALS(8)
- Refutation
- Q(d);XQ(D)
- Try
- Q(D);N_PINP(b),XP(f)
- Threat
- DUALS(6)
- Vars
- Q(d);::B(A)+R(C),DCHECK
- S(e);N_GUARD::S(H)
- P(g);OGATEB::QAB(D)
- Refutation
- B(a);
- Try
- Actual
- B(E);N_PINP(b)
- Threat
- B(A)+R(C),DCHECK
- Vars
- K(c);P-FLIGHT,P_SPINP(b),XB(E)::R1(C)
- B(a);OGATE,SBLOCK,XB(E)::QAB(D)
- S(e);N_GUARD,SBLOCK,XB(E)::S(H)
- P(f);OGATE,SBLOCK,XB(E)::QAR(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).