MESON Chess Problem Database
Problem Display
PID: 228744 (1b1RB3/3q4/8/3b2Q1/1B3n1n/1p1k4/1P1NNP2/3K4 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach-Aktiv, 2005
#2
9 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Bb5#
- 1...Qg4
- 2.Bb5#
- 1...Qb5
- 2.Bxb5#
- 1...Qf5
- 2.Bb5#
- 1...Qe6
- 2.Bb5#
- 1...Qa7
- 2.Bb5#
- 1...Qe7
- 2.Bb5#
- 1...Qf7
- 2.Bb5#
- 1...Qg7
- 2.Bb5#
- 1...Qh7
- 2.Bb5#
- 1...Bh1
- 2.Qb5#
- 1...Bg2
- 2.Qb5#
- 1...Bf3
- 2.Qb5#
- 1...Be4
- 2.Qb5#
- 1...Bb7
- 2.Qb5#
- 1...Ba8
- 2.Qb5#
- 1...Sxe2
- 2.Qe3#
- 1...Sh3
- 2.Qe3#
- 1...Sh5
- 2.Qe3#
- 1...Se6
- 2.Qe3#
- 1...Sfg6
- 2.Qe3#
- 1...Qh3
- Tries
- 1.Bc5?
- threat
- 2.Sc1#
- 1...Sxe2
- 2.Qe3#
- 1...Qg4
- 2.Bb5#
- 1...Bf3!
- threat
- 1.Bxd7?
- threat
- 2.Bb5#
- 1...Sxe2
- 2.Qe3#
- 1...Bc4
- 2.Bf5#
- 1...Bc6
- 2.Bf5#
- 1...Bd6!
- threat
- 1.Qxf4?
- threat
- 2.Sc1#
- 2.Qe3#
- 2.Qd4#
- 1...Qxe8
- 2.Sc1#
- 2.Rxd5#
- 2.Qc4#
- 2.Qd4#
- 1...Qh3
- 2.Sc1#
- 2.Bb5#
- 2.Rxd5#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Qg4
- 2.Bb5#
- 2.Rxd5#
- 2.Qe3#
- 1...Qc6
- 2.Qe3#
- 2.Qd4#
- 2.Qe4#
- 1...Qe6
- 2.Sc1#
- 2.Bb5#
- 2.Qc4#
- 2.Qd4#
- 1...Qc8
- 2.Rxd5#
- 2.Qe3#
- 2.Qd4#
- 2.Qe4#
- 1...Qa7
- 2.Sc1#
- 2.Bb5#
- 2.Qc4#
- 2.Qe4#
- 1...Qc7
- 2.Rxd5#
- 2.Qe3#
- 2.Qd4#
- 2.Qe4#
- 1...Qe7
- 2.Sc1#
- 2.Bb5#
- 2.Rxd5#
- 2.Qc4#
- 2.Qd4#
- 1...Qg7
- 2.Sc1#
- 2.Bb5#
- 2.Qe3#
- 2.Qc4#
- 2.Qe4#
- 1...Bh1
- 2.Sc1#
- 2.Qe3#
- 2.Qc4#
- 1...Bg2
- 2.Sc1#
- 2.Qe3#
- 2.Qc4#
- 1...Bf3
- 2.Qe3#
- 2.Qc4#
- 1...Bc4
- 2.Sc1#
- 2.Qe3#
- 2.Qxc4#
- 2.Qe4#
- 1...Be4
- 2.Qe3#
- 2.Qxe4#
- 1...Bc6
- 2.Sc1#
- 2.Qe3#
- 2.Qc4#
- 1...Be6
- 2.Sc1#
- 2.Qe3#
- 2.Qe4#
- 1...Bb7
- 2.Sc1#
- 2.Qe3#
- 2.Qc4#
- 1...Bf7
- 2.Sc1#
- 2.Qe3#
- 2.Qe4#
- 1...Ba8
- 2.Sc1#
- 2.Qe3#
- 2.Qc4#
- 1...Bg8
- 2.Sc1#
- 2.Qe3#
- 2.Qe4#
- 1...Be5
- 2.Sc1#
- 2.Qe3#
- 1...Ba7
- 2.Sc1#
- 1...Sg2
- 2.Sc1#
- 2.Qd4#
- 1...Sf3
- 2.Sc1#
- 2.Qe3#
- 1...Sf5
- 2.Sc1#
- 1...Bxf4!
- threat
- 1.Qxd5+?
- 1...Qxd5
- 2.Bb5#
- 1...Sxd5!
- 1...Qxd5
- 1.Qe5?
- threat
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qd4#
- 2.Qe3#
- 1...Qxe8
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qd4#
- 1...Sxe2
- 2.Qe3#
- 1...Bf3
- 2.Qc3#
- 2.Qe3#
- 2.Qb5#
- 1...Qh3
- 2.Sc1#
- 2.Sxf4#
- 2.Bb5#
- 2.Qc3#
- 2.Qd4#
- 2.Qe4#
- 1...Qg4
- 2.Bb5#
- 2.Qc3#
- 2.Qd4#
- 2.Qe3#
- 2.Qe4#
- 1...Qf5
- 2.Sc1#
- 2.Bb5#
- 2.Qc3#
- 2.Qd4#
- 2.Qe3#
- 1...Qc6
- 2.Sxf4#
- 2.Qd4#
- 2.Qe3#
- 2.Qe4#
- 1...Qe6
- 2.Sc1#
- 2.Sxf4#
- 2.Bb5#
- 2.Qc3#
- 2.Qd4#
- 1...Qc8
- 2.Sxf4#
- 2.Qd4#
- 2.Qe3#
- 2.Qe4#
- 1...Qa7
- 2.Sc1#
- 2.Sxf4#
- 2.Bb5#
- 2.Qc3#
- 2.Qe4#
- 1...Qc7
- 2.Sxf4#
- 2.Qd4#
- 2.Qe3#
- 2.Qe4#
- 1...Qe7
- 2.Sc1#
- 2.Sxf4#
- 2.Bb5#
- 2.Qc3#
- 2.Qd4#
- 1...Qf7
- 2.Sc1#
- 2.Bb5#
- 2.Qc3#
- 2.Qd4#
- 2.Qe3#
- 2.Qe4#
- 1...Qg7
- 2.Sc1#
- 2.Sxf4#
- 2.Bb5#
- 2.Qe3#
- 2.Qe4#
- 1...Bh1
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 2.Qb5#
- 1...Bg2
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 2.Qb5#
- 1...Bc4
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 2.Qe4#
- 1...Be4
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qxe4#
- 2.Qb5#
- 1...Bc6
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 1...Be6
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 2.Qe4#
- 1...Bb7
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 2.Qb5#
- 1...Bf7
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 2.Qe4#
- 1...Ba8
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 2.Qb5#
- 1...Bg8
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 2.Qe4#
- 1...Ba7
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 1...Sfg2
- 2.Sc1#
- 2.Qc3#
- 2.Qd4#
- 1...Sh3
- 2.Sc1#
- 2.Qc3#
- 2.Qd4#
- 2.Qe3#
- 1...Sh5
- 2.Sc1#
- 2.Qc3#
- 2.Qd4#
- 2.Qe3#
- 1...Se6
- 2.Sc1#
- 2.Qc3#
- 2.Qe3#
- 1...Sfg6
- 2.Sc1#
- 2.Qc3#
- 2.Qd4#
- 2.Qe3#
- 1...Shg2
- 2.Sc1#
- 2.Qc3#
- 2.Qd4#
- 1...Sf3
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 2.Qe3#
- 1...Sf5
- 2.Sc1#
- 2.Sxf4#
- 2.Qc3#
- 1...Shg6
- 2.Sc1#
- 2.Qc3#
- 2.Qd4#
- 2.Qe3#
- 1...Bxe5!
- threat
- 1.Qf5+?
- 1...Qxf5
- 2.Bb5#
- 1...Be4
- 2.Qxe4#
- 2.Qb5#
- 1...Sxf5!
- 1...Qxf5
- 1.Bc5?
- Keys
- 1.Bc3!
- threat
- 2.Sc1#
- 1...Sxe2
- 2.Qe3#
- 1...Qg4
- 2.Bb5#
- 1...Bf3
- 2.Qb5#
- threat
- 1.Bc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 18
- Sets
- Q(f);OGATE,P_SPINB(e)::B(I)
- Q(f);OGATE,P_PINS(D),P_SPINB(e)::B(I)
- Q(f);OGATE,P_SPINB(e)::B(I),XQ(f)
- B(e);OGATE,P_SPINQ(f)::QAB(G)
- B(e);OGATE,P_PINS(D),P_SPINQ(f)::QAB(G)
- S(c);OGATE,XS(D)::QAR1(G)
- S(c);OGATE::QAR1(G)
- Tries
- Try
- B(F);
- Threat
- S(D)
- Vars
- S(c);OGATE,XS(D)::QAR1(G)
- Q(f);OGATE,P_PINS(D),P_SPINB(e)::B(I)
- Refutation
- B(e);P_PINS(D),P_SPINQ(f)
- Try
- B(I);XQ(f)
- Threat
- B(I)
- Vars
- S(c);OGATE,XS(D)::QAR1(G)
- B(e);::R(H)+B(I),DCHECK
- Refutation
- B(g);
- Try
- Q(G);XS(c)
- Threat
- DUALS(3)
- Vars
- B(g);::S(D)
- S(d);::S(D)
- Refutation
- B(g);XQ(G)
- Try
- Q(G);CHECK,XB(e)
- Vars
- Q(f);OGATE,P_SPINQ(f),XQ(G)::B(I)
- Refutation
- S(c);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(5)
- Vars
- S(c);XS(D)::QAR1(G)
- Refutation
- B(g);XQ(G)
- Try
- Q(G);CHECK
- Vars
- Q(f);OGATE,P_SPINB(e),XQ(G)::B(I)
- Refutation
- S(d);XQ(G)
- Try
- Actual
- B(F);
- Threat
- S(D)
- Vars
- S(c);OGATE,XS(D)::QAR1(G)
- Q(f);OGATE,P_PINS(D),P_SPINB(e)::B(I)
- B(e);OGATE,P_PINS(D),P_SPINQ(f)::QAB(G)
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).