MESON Chess Problem Database
Problem Display
PID: 164500 (3KNN2/2pB3p/p4R2/r2bk1r1/3Rp1P1/2q1P3/8/B7 w - - 0 1)
Ahues, Herbert Siegfried Oskar
stern, 1998
(First published on Thu Nov 5 1998)
#2
9 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qxd4
- 2.Bxd4#
- 2.exd4#
- 1...Rxg4
- 2.Rf5#
- 1...Rf5
- 2.Rxf5#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Rf5#
- 1...Rg8
- 2.Rf5#
- 1...Bc6
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Bb7
- 2.Re6#
- 1...Ba8
- 2.Re6#
- 1...Qxd4
- Tries
- 1.Sg6+?
- 1...Rxg6
- 2.Rf5#
- 1...hxg6!
- 1...Rxg6
- 1.Bxc3?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 1...Ra4
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 1...Rc5
- 2.Rc4#
- 1...Ba2
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rdd6#
- 1...Bb3
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rdd6#
- 1...Bc4
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rdd6#
- 1...Bc6
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rdd6#
- 2.Re6#
- 1...Be6
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd6#
- 2.Rxe6#
- 1...Bb7
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rdd6#
- 2.Re6#
- 1...Bf7
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rdd6#
- 1...Ba8
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rdd6#
- 2.Re6#
- 1...Bg8
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rdd6#
- 1...Ra3!
- threat
- 1.Bb5?
- threat
- 2.Sd7#
- 1...Rg7
- 2.Rf5#
- 1...Bc6
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Qc6!
- threat
- 1.Bf5?
- threat
- 2.Sd7#
- 1...Qxe3
- 2.Rxe4#
- 1...Qc6
- 2.Rxe4#
- 1...Bc6
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Rg7!
- threat
- 1.Bc6?
- threat
- 2.Sd7#
- 1...Bxc6
- 2.Re6#
- 1...Rg7
- 2.Rf5#
- 1...Be6
- 2.Rxe4#
- 2.Rxe6#
- 1...Qxc6!
- threat
- 1.Be6?
- threat
- 2.Sd7#
- 1...Bxe6
- 2.Rxe6#
- 1...Qc6
- 2.Rxd5#
- 1...Rg7
- 2.Rf5#
- 1...Bc6!
- threat
- 1.Bc8?
- threat
- 2.Sd7#
- 1...Rg7
- 2.Rf5#
- 1...Bc6
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Qc6!
- threat
- 1.Rxd5+?
- 1...Rxd5
- 2.Re6#
- 1...Kxd5!
- 1...Rxd5
- 1.Sg6+?
- Keys
- 1.Ba4!
- threat
- 2.Sd7#
- 1...Qc6
- 2.Rc4#
- 1...Rg7
- 2.Rf5#
- 1...Bc6
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- threat
- 1.Ba4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(f);N_GUARD,XP(D)::R1(E)
- R(f);N_GUARD::R1(E),XR(f)
- R(f);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E),XB(d)
- Tries
- Try
- S(I);CHECK
- Vars
- R(f);XS(I)::R1(E)
- Refutation
- P(i);XS(I)
- Try
- B(A);XQ(a)
- Threat
- DUALS(6)
- Vars
- R(c);::B(A)+R(C)
- Refutation
- R(c);
- Try
- B(F);
- Threat
- S(I)
- Vars
- R(f);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E),XB(d)
- Refutation
- Q(a);
- Try
- B(F);
- Threat
- S(I)
- Vars
- Q(a);XP(B)::B(A)+R(C),DCHECK,XP(b)
- Q(a);::B(A)+R(C),DCHECK,XP(b)
- B(d);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E),XB(d)
- Refutation
- R(f);
- Try
- B(F);
- Threat
- S(I)
- Vars
- B(d);N_GUARD,XB(F)::R1(E)
- R(f);N_GUARD::R1(E)
- Refutation
- Q(a);XB(F)
- Try
- B(F);
- Threat
- S(I)
- Vars
- B(d);OGATE,XB(F)::R1(E),XB(d)
- Q(a);::B(A)+R(C),DCHECK,XB(d)
- R(f);N_GUARD::R1(E)
- Refutation
- B(d);
- Try
- B(F);
- Threat
- S(I)
- Vars
- R(f);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E),XB(d)
- Refutation
- Q(a);
- Try
- R(C);CHECK,P_PINQ(a),XB(d)
- Vars
- R(c);P_PINB(F),SBLOCK,XR(C)::R1(E)
- Refutation
- K(e);N_SPINQ(a),P-FLIGHT,XR(C)
- Try
- Actual
- B(F);
- Threat
- S(I)
- Vars
- Q(a);OGATEB::B(A)+R(C)
- R(f);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E),XB(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).