MESON Chess Problem Database
Problem Display
PID: 160918 (4bN1n/b7/5p1B/1R1qrk1p/Q3R2p/3B3P/6K1/5N2 w - - 0 1)
Albrecht, Hermann
Schach-Echo, 1935
#2
9 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qa2+
- 2.Re2#
- 1...Qb3
- 2.Rf4#
- 2.Rexe5#
- 1...Qc4
- 2.Rxc4#
- 2.Rf4#
- 2.Rexe5#
- 1...Qxe4+
- 2.Bxe4#
- 2.Qxe4#
- 1...Qe6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Reb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 2.Rexe5#
- 1...Qf7
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Reb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 2.Rexe5#
- 1...Qg8+
- 2.Rg4#
- 1...Qxd3
- 2.Rf4#
- 1...Qd4
- 2.Rxd4#
- 2.Rf4#
- 2.Rexe5#
- 1...Qxb5
- 2.Rf4#
- 1...Qc5
- 2.Rf4#
- 1...Qd6
- 2.Rd4#
- 2.Rf4#
- 2.Rexe5#
- 1...Qd7
- 2.Rd4#
- 2.Rf4#
- 2.Rexe5#
- 1...Qd8
- 2.Rd4#
- 2.Rf4#
- 2.Rexe5#
- 1...Rxe4
- 2.Rxd5#
- 2.Qxe4#
- 1...Be3
- 2.Sxe3#
- 1...Bb8
- 2.Se3#
- 1...Qa2+
- Tries
- 1.Kh2?
- threat
- 2.Rf4#
- 1...Qa2+
- 2.Re2#
- 1...Qxe4
- 2.Bxe4#
- 2.Qxe4#
- 1...Rxe4
- 2.Rxd5#
- 2.Qxe4#
- 1...Re6
- 2.Rxe6#
- 1...Re7
- 2.Re6#
- 2.Rxe7#
- 1...Bg1+!
- threat
- 1.Rc5?
- threat
- 2.Se3#
- 1...Qa2+
- 2.Re2#
- 1...Qxe4+
- 2.Bxe4#
- 2.Qxe4#
- 1...Qg8+
- 2.Rg4#
- 1...Qxd3
- 2.Rf4#
- 1...Qxc5
- 2.Rf4#
- 1...Rxe4
- 2.Rxd5#
- 2.Qxe4#
- 1...Qd4
- 2.Rxd4#
- 2.Rf4#
- 2.Rexe5#
- 1...Bxc5!
- threat
- 1.Rxd5?
- threat
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Rb4#
- 2.Rc4#
- 2.Red4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 2.Rexe5#
- 1...Be3
- 2.Sxe3#
- 2.Rxe3#
- 2.Rb4#
- 2.Rc4#
- 2.Red4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 2.Rexe5#
- 1...Bd4
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Rexd4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 2.Rexe5#
- 1...Bb5
- 2.Rc4#
- 2.Rf4#
- 2.Rexe5#
- 1...Rxd5!
- threat
- 1.Qd4?
- threat
- 2.Se3#
- 1...Qa2+
- 2.Re2#
- 1...Qxe4+
- 2.Bxe4#
- 2.Qxe4#
- 1...Qg8+
- 2.Rg4#
- 1...Qxd4
- 2.Rxd4#
- 2.Rf4#
- 2.Rexe5#
- 1...Bxd4!
- threat
- 1.Qxa7?
- threat
- 2.Se3#
- 2.Qf2#
- 1...Qa2+
- 2.Re2#
- 1...Qg8+
- 2.Rg4#
- 1...Qxd3
- 2.Rf4#
- 1...Rxe4
- 2.Rxd5#
- 1...Qd4
- 2.Rxd4#
- 2.Rf4#
- 2.Rexe5#
- 1...Qc5
- 2.Rf4#
- 1...Sg6
- 2.Se3#
- 1...Qxe4+!
- threat
- 1.Kh2?
- Keys
- 1.Qd1!
- threat
- 2.Qf3#
- 1...Qa2+
- 2.Re2#
- 1...Qg8+
- 2.Rg4#
- 1...Qxd3
- 2.Rf4#
- 1...Rxe4
- 2.Rxd5#
- 1...Be3
- 2.Sxe3#
- 1...Sg6
- 2.Qxh5#
- threat
- 1.Qd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(b);CHECK,N_PINR(F),P_SPINR(c)::B(C)+R(F)
- Q(b);N_PINR(F),P_SPINR(c),XB(C)::R1(F)
- Q(b);N_PINR(F),XR(G)::B(C)+R(F),DCHECK
- Q(b);N_PINR(F)::B(C)+R(F),DCHECK
- B(g);N_GUARD::S(A),XB(g)
- B(g);N_GUARD::S(A)
- Tries
- Try
- K(B);N_SPINR(F),P-FLIGHT
- Threat
- B(C)+R(F),DCHECK
- Vars
- Q(b);CHECK,N_GUARD,P_SPINR(c)::B(C)+R(F)
- R(c);OGATE,P_SPINQ(b)::B(C)+R(F),XR(c)
- Refutation
- B(g);CHECK
- Try
- R(G);
- Threat
- S(A)
- Vars
- Q(b);CHECK,N_PINR(F),P_SPINR(c)::B(C)+R(F)
- Q(b);N_PINR(F),P_SPINR(c),XB(C)::R1(F)
- Q(b);N_PINR(F),XR(G)::B(C)+R(F),DCHECK
- Refutation
- B(g);XR(G)
- Try
- R(G);N_SPINR(F),P_PINR(c),XQ(b)
- Threat
- DUALS(10)
- Refutation
- R(c);N_SPINR(c),XR(G)
- Try
- Q(E);
- Threat
- S(A)
- Vars
- Q(b);CHECK,N_PINR(F),P_SPINR(c)::B(C)+R(F)
- Refutation
- B(g);XQ(E)
- Try
- Q(E);XB(g)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_PINR(F),P_SPINR(c)::B(C)+R(F)
- Q(b);N_PINR(F),P_SPINR(c),XB(C)::R1(F)
- R(c);OGATEB,P_SPINQ(b),P_SPINR(c),XR(F)::R(G),XQ(b)
- Q(b);N_PINR(F)::B(C)+R(F),DCHECK
- S(i);::S(A)
- Refutation
- Q(b);CHECK,P_SPINQ(b),P_SPINR(c),XR(F)
- Try
- Actual
- Q(E);
- Threat
- QAR2(E)
- Vars
- Q(b);CHECK,N_PINR(F),P_SPINR(c)::B(C)+R(F)
- Q(b);N_PINR(F),P_SPINR(c),XB(C)::R1(F)
- R(c);OGATEB,P_SPINQ(b),P_SPINR(c),XR(F)::R(G),XQ(b)
- B(g);N_GUARD::S(A),XB(g)
- S(i);S_CUTB(h)::QAR2(E),XP(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).