MESON Chess Problem Database
Problem Display
PID: 226638 (N1Kb4/8/k1N5/8/8/1R6/8/8 w - - 0 1)
Hogrefe, Max
Deutsche Schachzeitung, 1930
#2
4 + 2
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bh4
- 2.Sc7#
- 2.Rb6#
- 1...Bg5
- 2.Sc7#
- 2.Rb6#
- 1...Bb6
- 2.Rxb6#
- 1...Bf6
- 2.Sc7#
- 2.Rb6#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 2.Rb6#
- 1...Bh4
- Tries
- 1.Kd7?
- 1...Bb6
- 2.Rxb6#
- 1...Bh4
- 2.Sc7#
- 2.Rb6#
- 1...Bg5
- 2.Sc7#
- 2.Rb6#
- 1...Bf6
- 2.Sc7#
- 2.Rb6#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 2.Rb6#
- 1...Ba5!
- 1...Bb6
- 1.Kb8?
- 1...Bc7+
- 2.Sxc7#
- 1...Bh4
- 2.Sc7#
- 2.Rb6#
- 1...Bg5
- 2.Sc7#
- 2.Rb6#
- 1...Bb6
- 2.Rxb6#
- 1...Bf6
- 2.Sc7#
- 2.Rb6#
- 1...Be7
- 2.Sc7#
- 2.Rb6#
- 1...Ba5!
- 1...Bc7+
- 1.Sxd8?
- 1...Ka7
- 2.Ra3#
- 1...Ka5!
- 1...Ka7
- 1.Rb1?
- 1...Bh4
- 2.Sc7#
- 2.Rb6#
- 1...Bg5
- 2.Sc7#
- 2.Rb6#
- 1...Bb6
- 2.Rxb6#
- 1...Bf6
- 2.Sc7#
- 2.Rb6#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 2.Rb6#
- 1...Ba5!
- 1...Bh4
- 1.Rb2?
- 1...Bh4
- 2.Sc7#
- 2.Rb6#
- 1...Bg5
- 2.Sc7#
- 2.Rb6#
- 1...Bb6
- 2.Rxb6#
- 1...Bf6
- 2.Sc7#
- 2.Rb6#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 2.Rb6#
- 1...Ba5!
- 1...Bh4
- 1.Ra3+?
- 1...Ba5
- 2.Rxa5#
- 1...Kb5!
- 1...Ba5
- 1.Rb4?
- 1...Bh4
- 2.Sc7#
- 2.Rb6#
- 1...Bg5
- 2.Sc7#
- 2.Rb6#
- 1...Bb6
- 2.Rxb6#
- 1...Bf6
- 2.Sc7#
- 2.Rb6#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 2.Rb6#
- 1...Ba5!
- 1...Bh4
- 1.Rb5?
- 1...Ba5
- 2.Rxa5#
- 1...Bh4
- 2.Sc7#
- 2.Ra5#
- 2.Rb6#
- 1...Bg5
- 2.Sc7#
- 2.Ra5#
- 2.Rb6#
- 1...Bb6
- 2.Rxb6#
- 1...Bf6
- 2.Sc7#
- 2.Ra5#
- 2.Rb6#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 2.Ra5#
- 2.Rb6#
- 1...Kxb5!
- 1...Ba5
- 1.Rb8?
- 1...Bb6
- 2.Rxb6#
- 1...Bh4
- 2.Sc7#
- 2.Rb6#
- 1...Bg5
- 2.Sc7#
- 2.Rb6#
- 1...Bf6
- 2.Sc7#
- 2.Rb6#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 2.Rb6#
- 1...Ba5!
- 1...Bb6
- 1.Kd7?
- Keys
- 1.Rb7!
- 1...Bb6
- 2.Rxb6#
- 1...Ba5
- 2.Sb8#
- 1...Bh4
- 2.Sc7#
- 2.Rb6#
- 1...Bg5
- 2.Sc7#
- 2.Rb6#
- 1...Bf6
- 2.Sc7#
- 2.Rb6#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 2.Rb6#
- 1...Bb6
- 1.Rb7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD::R1(A),XB(b)
- B(b);N_GUARD::S(C),XB(b)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- B(b);N_GUARD::R1(A),XB(b)
- B(b);N_GUARD::S(C),XB(b)
- Refutation
- B(b);
- Try
- K(D);P-FLIGHT
- Vars
- B(b);CHECK,N_GUARD::S(C),XB(b)
- B(b);N_GUARD::R1(A),XB(b)
- Refutation
- B(b);
- Try
- S(B);XB(b)
- Vars
- K(a);P-FLIGHT::R(A)
- Refutation
- K(a);P-FLIGHT
- Try
- R(A);
- Vars
- B(b);N_GUARD::R1(A),XB(b)
- B(b);N_GUARD::S(C),XB(b)
- Refutation
- B(b);
- Try
- R(A);
- Vars
- B(b);N_GUARD::R1(A),XB(b)
- B(b);N_GUARD::S(C),XB(b)
- Refutation
- B(b);
- Try
- R(A);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::R1(A),XB(b)
- Refutation
- K(a);S_FLIGHT
- Try
- R(A);
- Vars
- B(b);N_GUARD::R1(A),XB(b)
- B(b);N_GUARD::S(C),XB(b)
- Refutation
- B(b);
- Try
- R(A);
- Vars
- B(b);N_GUARD::R1(A),XB(b)
- B(b);N_GUARD::S(C),XB(b)
- Refutation
- K(a);S_FLIGHT,XR(A)
- Try
- R(A);
- Vars
- B(b);N_GUARD::R1(A),XB(b)
- B(b);N_GUARD::S(C),XB(b)
- Refutation
- B(b);
- Try
- Actual
- R(A);
- Vars
- B(b);N_GUARD::R1(A),XB(b)
- B(b);SBLOCK::S(B)
- B(b);N_GUARD::S(C),XB(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).