MESON Chess Problem Database
Problem Display
PID: 176148 (3N2K1/p4R2/kp6/2nBp3/3N4/3p4/q2Q4/R1n1B3 w - - 0 1)
Segers, Marcel
Schach-Echo, 1935
#2
8 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Bb7#
- 1...Sa4
- 2.Bb7#
- 1...Se4
- 2.Bb7#
- 1...Se6
- 2.Bb7#
- 1...Sb7
- 2.Bxb7#
- 1...Sd7
- 2.Bb7#
- 1...Sb3
- Tries
- 1.S8e6?
- threat
- 2.Sc7#
- 1...Sxe6
- 2.Bb7#
- 1...b5!
- threat
- 1.Rxa2+?
- 1...Sa4
- 2.Bb7#
- 2.Rxa4#
- 1...Sxa2!
- 1...Sa4
- 1.Qb4?
- threat
- 2.Qb5#
- 1...b5
- 2.Qxb5#
- 1...exd4!
- threat
- 1.Qh6?
- threat
- 2.Bc4#
- 1...Sa4
- 2.Bb7#
- 1...Se6
- 2.Bb7#
- 1...d2!
- threat
- 1.Qxa2+?
- 1...Sa4
- 2.Bb7#
- 2.Qxa4#
- 1...Sxa2!
- 1...Sa4
- 1.Qxd3+?
- 1...S5xd3
- 2.Bb7#
- 1...b5
- 2.Qxb5#
- 1...S1xd3!
- 1...S5xd3
- 1.S8e6?
- Keys
- 1.Rf6!
- threat
- 2.Bc4#
- 1...Sa4
- 2.Qa5#
- 1...Se6
- 2.Bb7#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- S(d);N_GUARD::B(E)
- S(d);N_GUARD,N_SPINQ(b)::B(E)
- S(d);N_GUARD::B(E),XS(d)
- Tries
- Try
- S(G);
- Threat
- S(G)
- Vars
- S(d);N_GUARD,XS(G)::B(E)
- Refutation
- P(g);
- Try
- R(A);CHECK,XQ(b)
- Refutation
- S(a);XR(A)
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- P(g);::QAB1(C),XP(g)
- Refutation
- P(e);XS(D)
- Try
- Q(C);P_PINP(g)
- Threat
- B(E)
- Vars
- S(d);N_GUARD,N_SPINQ(b)::B(E)
- S(d);N_GUARD,N_SPINP(g)::B(E)
- Refutation
- P(c);
- Try
- Q(C);CHECK,XQ(b)
- Refutation
- S(a);P_SPINS(a),XQ(C)
- Try
- Q(C);CHECK,XP(c)
- Vars
- S(d);XQ(C)::B(E)
- P(g);P_SPINP(g)::QAB1(C),XP(g)
- Refutation
- S(a);XQ(C)
- Try
- Actual
- R(F);P_PINP(g),P_SPINB(E)
- Threat
- B(E)
- Vars
- S(d);N_SPINQ(b),S_CUTQ(b)::QAR1(C)
- S(d);N_PINB(E),N_SPINP(g)::B(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).