MESON Chess Problem Database
Problem Display
PID: 150696 (2K2N2/2b5/1Pk5/2n3p1/2Q1q3/4pB2/6R1/1R5b w - - 0 1)
Ahlheim, Karl-Heinz
Die Schwalbe, 1983
#2
7 + 7
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Qxd5#
- 1...Bd6
- 2.Bxe4#
- 1...Qd5
- Tries
- 1.Sd7?
- threat
- 2.Qxc5#
- 1...Bxb6
- 2.Rxb6#
- 1...Bd6
- 2.Bxe4#
- 1...Kd6!
- threat
- 1.Rb5?
- threat
- 2.Qxc5#
- 1...Kd6
- 2.Qxc5#
- 1...Bd6
- 2.Bxe4#
- 1...Bxb6!
- threat
- 1.Rd2?
- threat
- 2.Qb5#
- 1...Qd5
- 2.Qxd5#
- 1...exd2!
- threat
- 1.Rxg5?
- threat
- 2.Qxc5#
- 1...Kd6
- 2.Qxc5#
- 1...Bxb6
- 2.Rg6#
- 1...Qd5
- 2.Qxd5#
- 1...Bd6
- 2.Qb5#
- 1...Be5!
- threat
- 1.Sd7?
- Keys
- 1.Rc2!
- threat
- 2.Qxc5#
- 1...Kd6
- 2.Qxc5#
- 1...Bxb6
- 2.Qe6#
- 1...Bd6
- 2.Qxe4#
- threat
- 1.Rc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- Q(c);N_GUARD::QAB1(D),XQ(c)
- B(g);SBLOCK::B(C),XQ(c)
- Tries
- Try
- S(G);
- Threat
- QAR1(D),XS(d)
- Vars
- B(g);OGATE,XP(E)::R1(A),XB(g)
- B(g);SBLOCK::B(C),XQ(c)
- Refutation
- K(f);N_SPINQ(c),N_SPINS(d),P-FLIGHT
- Try
- R(A);
- Threat
- QAR1(D),XS(d)
- Vars
- K(f);N_SPINQ(c),N_SPINS(d),P-FLIGHT::QAB1(D),XS(d)
- B(g);SBLOCK::B(C),XQ(c)
- Refutation
- B(g);XP(E)
- Try
- R(B);
- Threat
- QAB1(D)
- Vars
- Q(c);N_GUARD::QAB1(D),XQ(c)
- Refutation
- P(b);XR(B)
- Try
- R(B);XP(e)
- Threat
- QAR1(D),XS(d)
- Vars
- K(f);N_SPINQ(c),N_SPINS(d),P-FLIGHT::QAB1(D),XS(d)
- B(g);N_GUARD,XP(E)::R(B)
- Q(c);N_GUARD::QAB1(D),XQ(c)
- B(g);SBLOCK::QAB1(D)
- Refutation
- B(g);
- Try
- Actual
- R(B);
- Threat
- QAR1(D),XS(d)
- Vars
- K(f);N_SPINQ(c),N_SPINS(d),P-FLIGHT::QAB1(D),XS(d)
- B(g);N_GUARD,XP(E)::QAR2(D)
- B(g);SBLOCK::QAB(D),XQ(c)
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).