MESON Chess Problem Database
Problem Display
PID: 202569 (3N1B2/5P2/3p1kB1/3pN1p1/3p2Pq/5Kp1/1n1pQ1Pb/5R2 w - - 0 1)
Letzen, Einar
Magyar Sakkvilag, 1923
#2
10 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxg4+
- 2.Kxg4#
- 1...dxe5
- 2.Qa6#
- 1...Qxg4+
- Tries
- 1.Bf5?
- threat
- 2.Sd7#
- 1...dxe5
- 2.Qa6#
- 1...Qxg4+!
- threat
- 1.Bh5?
- threat
- 2.Sd7#
- 1...Qxg4+
- 2.Kxg4#
- 1...dxe5
- 2.Qa6#
- 1...Qxh5!
- threat
- 1.Bh7?
- threat
- 2.Sd7#
- 1...Qxg4+
- 2.Kxg4#
- 2.Sxg4#
- 1...dxe5
- 2.Qa6#
- 1...Qxh7!
- threat
- 1.Be7+?
- 1...Kg7
- 2.f8Q#
- 1...Kxe7!
- 1...Kg7
- 1.Bg7+?
- 1...Ke7
- 2.f8Q#
- 1...Kxg7!
- 1...Ke7
- 1.Bf5?
- Keys
- 1.Be4!
- threat
- 2.Sd7#
- 1...Qxg4+
- 2.Sxg4#
- 1...dxe4+
- 2.Kxe4#
- 1...Kxe5
- 2.Bg7#
- 1...dxe5
- 2.Qa6#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(f);CHECK,XP(E)::R(A)+K(D),XQ(f)
- P(i);OGATEB,SBLOCK,XS(F)::QAR(B)
- Tries
- Try
- B(G);
- Threat
- S(F)
- Vars
- P(i);OGATEB,SBLOCK,XS(F)::QAR(B)
- Refutation
- Q(f);CHECK,XP(E)
- Try
- B(G);
- Threat
- S(F)
- Vars
- Q(f);CHECK,XP(E)::R(A)+K(D),XQ(f)
- P(i);OGATEB,SBLOCK,XS(F)::QAR(B)
- Refutation
- Q(f);P_PINP(E),XB(G)
- Try
- B(G);
- Threat
- S(F)
- Vars
- P(i);OGATEB,SBLOCK,XS(F)::QAR(B)
- Refutation
- Q(f);XB(G)
- Try
- B(J);CHECK
- Vars
- K(j);S_FLIGHT::P=Q
- Refutation
- K(j);S_FLIGHT,XB(J)
- Try
- B(J);CHECK
- Vars
- K(j);S_FLIGHT::P=Q
- Refutation
- K(j);S_FLIGHT,XB(J)
- Try
- Actual
- B(G);
- Threat
- S(F)
- Vars
- Q(f);CHECK,XP(E)::S(F),XQ(f)
- P(g);CHECK,XB(G)::R(A)+K(D),XP(g)
- K(j);S_FLIGHT,XS(F)::B(J)
- P(i);OGATEB,SBLOCK,XS(F)::QAR(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).