MESON Chess Problem Database
Problem Display
PID: 157148 (7r/4nRN1/8/8/n3B2k/4B3/p6K/r2Q4 w - - 0 1)
Speckmann, Werner
Die Schwalbe, 1938
#2
6 + 6
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rh5
- 2.Qxh5#
- 1...Ra8
- 2.Qh5#
- 1...Rb8
- 2.Qh5#
- 1...Rc8
- 2.Qh5#
- 1...Rd8
- 2.Qh5#
- 1...Re8
- 2.Qh5#
- 1...Rf8
- 2.Qh5#
- 1...Rg8
- 2.Qh5#
- 1...Sd5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...Rh5
- Tries
- 1.Se6?
- threat
- 2.Bf2#
- 2.Bg5#
- 2.Rf4#
- 1...Rh5
- 2.Bf2#
- 2.Rf4#
- 1...Rf8
- 2.Bf2#
- 2.Bg5#
- 2.Rh7#
- 1...Rg8
- 2.Rh7#
- 1...Sd5
- 2.Bf2#
- 2.Bg5#
- 1...Sf5
- 2.Bg5#
- 1...Sg6
- 2.Bf2#
- 2.Bg5#
- 1...Rxd1!
- threat
- 1.Bh6?
- threat
- 2.Rf4#
- 2.Qh5#
- 1...Rxd1
- 2.Rf4#
- 1...Rf8
- 2.Qh5#
- 1...Sd5
- 2.Sf5#
- 2.Qh5#
- 1...Sf5
- 2.Sxf5#
- 2.Qh5#
- 1...Sg6
- 2.Sf5#
- 2.Qh5#
- 1...Rxh6!
- threat
- 1.Bf5?
- threat
- 2.Qxa4#
- 2.Qg4#
- 2.Qd4#
- 1...Sxf5
- 2.Sxf5#
- 1...Rb1
- 2.Qg4#
- 2.Qd4#
- 1...Rc1
- 2.Qg4#
- 2.Qd4#
- 1...Ra8
- 2.Qg4#
- 2.Qh5#
- 2.Qd4#
- 1...Rb8
- 2.Qg4#
- 2.Qh5#
- 2.Qd4#
- 1...Rc8
- 2.Qg4#
- 2.Qh5#
- 2.Qd4#
- 1...Rd8
- 2.Qg4#
- 2.Qh5#
- 1...Sb2
- 2.Qg4#
- 2.Qd4#
- 1...Sc3
- 2.Qg4#
- 1...Sc5
- 2.Qg4#
- 1...Sb6
- 2.Qg4#
- 2.Qd4#
- 1...Sd5
- 2.Qg4#
- 1...Sc6
- 2.Qg4#
- 1...Sg6
- 2.Qg4#
- 1...Rxd1!
- threat
- 1.Bh7?
- threat
- 2.Qxa4#
- 2.Qh5#
- 2.Qd4#
- 1...Rxh7
- 2.Qxa4#
- 2.Qd4#
- 1...Sc3
- 2.Qh5#
- 1...Rb1
- 2.Qh5#
- 2.Qd4#
- 1...Rc1
- 2.Qh5#
- 2.Qd4#
- 1...Ra8
- 2.Qh5#
- 2.Qd4#
- 1...Rb8
- 2.Qh5#
- 2.Qd4#
- 1...Rc8
- 2.Qh5#
- 2.Qd4#
- 1...Rd8
- 2.Qh5#
- 1...Sb2
- 2.Qh5#
- 2.Qd4#
- 1...Sc5
- 2.Qh5#
- 1...Sb6
- 2.Qh5#
- 2.Qd4#
- 1...Sd5
- 2.Sf5#
- 2.Qh5#
- 1...Sf5
- 2.Sxf5#
- 2.Qh5#
- 1...Sc6
- 2.Sf5#
- 2.Qh5#
- 1...Sg6
- 2.Sf5#
- 2.Qh5#
- 1...Rxd1!
- threat
- 1.Rf5?
- threat
- 2.Bf2#
- 2.Bg5#
- 1...Sxf5
- 2.Sxf5#
- 1...Rh5
- 2.Bf2#
- 2.Rxh5#
- 2.Qxh5#
- 1...Rxd1!
- threat
- 1.Rxe7?
- threat
- 2.Sf5#
- 1...Rh5
- 2.Qxh5#
- 1...Rf8
- 2.Qh5#
- 1...Rxd1!
- threat
- 1.Qf3?
- threat
- 2.Qg3#
- 2.Qh3#
- 2.Qf4#
- 1...Rf1
- 2.Qg3#
- 2.Qh3#
- 1...Rg1
- 2.Qh3#
- 1...Sd5
- 2.Sf5#
- 2.Qg3#
- 2.Qh3#
- 1...Sf5
- 2.Sxf5#
- 2.Qh3#
- 2.Qf4#
- 1...Sg6
- 2.Sf5#
- 2.Qg3#
- 2.Qh3#
- 1...Rh1+!
- threat
- 1.Qg1?
- threat
- 2.Bf2#
- 2.Bg5#
- 2.Rf4#
- 2.Qg3#
- 2.Qg5#
- 1...Rf1
- 2.Bg5#
- 2.Qg3#
- 2.Qg5#
- 1...Rh5
- 2.Bf2#
- 2.Rf4#
- 2.Qg3#
- 1...Rf8
- 2.Bf2#
- 2.Bg5#
- 2.Qg3#
- 2.Qg5#
- 1...Sd5
- 2.Bf2#
- 2.Bg5#
- 2.Qg3#
- 2.Qg5#
- 1...Sf5
- 2.Bg5#
- 2.Qg5#
- 1...Sg6
- 2.Bf2#
- 2.Bg5#
- 2.Qg3#
- 2.Qg5#
- 1...Rxg1!
- threat
- 1.Se6?
- Keys
- 1.Qxa4!
- threat
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Kg4+
- 2.Bh7#
- 1...Rh1+
- 2.Bxh1#
- 1...Rb1
- 2.Bxb1#
- 1...Rc1
- 2.Bc2#
- 1...Rd1
- 2.Bd3#
- 1...Rf1
- 2.Bf3#
- 1...Rg1
- 2.Bg2#
- 1...Rh7
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bxh7#
- 2.Ba8#
- 1...Ra8
- 2.Bxa8#
- 1...Rb8
- 2.Bb7#
- 1...Rc8
- 2.Bc6#
- 1...Rd8
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sf5
- 2.Bxf5#
- 1...Sc6
- 2.Bxc6#
- 1...Sg6
- 2.Bxg6#
- threat
- 1.Qxa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 8
- ADDED MATES = 7
- REMOVED MATES = 6
- Sets
- R(f);N_GUARD::QAR1(A),XR(f)
- R(f);N_GUARD::QAR1(A)
- S(e);N_GUARD::S(F)
- S(e);N_GUARD::S(F),XS(e)
- Tries
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(f);N_GUARD::R(E)
- S(e);::B(C)
- Refutation
- R(a);XQ(A)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(A)::R(E)
- R(f);::QAR1(A)
- Refutation
- R(f);XB(C)
- Try
- B(D);
- Threat
- DUALS(3)
- Vars
- S(e);XB(D)::S(F),XS(e)
- S(c);::QAR1(A)
- S(e);::QAR1(A)
- Refutation
- R(a);XQ(A)
- Try
- B(D);
- Threat
- DUALS(3)
- Vars
- S(c);::QAR1(A)
- R(f);::QAR1(A)
- Refutation
- R(a);XQ(A)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(e);XR(E)::S(F),XS(e)
- Refutation
- R(a);XQ(A)
- Try
- R(E);XS(e)
- Threat
- S(F)
- Vars
- R(f);N_GUARD::QAR1(A),XR(f)
- R(f);N_GUARD::QAR1(A)
- Refutation
- R(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(a);::QAR1(A)
- Refutation
- R(a);CHECK
- Try
- Q(A);
- Threat
- DUALS(5)
- Refutation
- R(a);XQ(A)
- Try
- Actual
- Q(A);XS(c)
- Threat
- DUALS(13)
- Vars
- K(d);CHECK,P-FLIGHT::QAR(A)+B(D)
- R(a);CHECK::QAR(A)+B(D),XR(a)
- R(a);::QAR(A)+B(D),XR(a)
- R(a);::QAR(A)+B(D)
- R(f);::QAR(A)+B(D),XR(f)
- R(f);::QAR(A)+B(D)
- S(e);::QAR(A)+B(D),XS(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).