MESON Chess Problem Database
Problem Display
PID: 90156 (1Q2b3/K3R1bB/p7/Nppp4/3kNp1r/R4p2/1n6/4Br2 w - - 0 1)
von Alvensleben, Wichard Udo Reinhard
Die Schwalbe, 1994
#2
8 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Bf2#
- 1...Rfh1
- 2.Bf2#
- 1...Rf2
- 2.Bxf2#
- 1...Be5
- 2.Qxe5#
- 1...Bh6
- 2.Qe5#
- 1...Bf8
- 2.Qe5#
- 1...c4
- 2.Qb6#
- 1...dxe4
- 2.Qd6#
- 1...Rg1
- Tries
- 1.Sg3?
- threat
- 2.Sf5#
- 2.Bc3#
- 1...Rxe1
- 2.Sf5#
- 1...Rxh7
- 2.Sf5#
- 2.Qxf4#
- 1...fxg3
- 2.Bc3#
- 1...c4
- 2.Qb6#
- 1...Rh5
- 2.Bc3#
- 2.Qxf4#
- 1...Be5
- 2.Qxe5#
- 1...Bd7
- 2.Bc3#
- 1...Sd1
- 2.Sf5#
- 2.Rd3#
- 1...Sa4
- 2.Sf5#
- 2.Rd3#
- 1...b4
- 2.Sf5#
- 1...Bg6!
- threat
- 1.Sg5?
- threat
- 2.Se6#
- 2.Bc3#
- 1...Rxe1
- 2.Sxf3#
- 1...Rxh7
- 2.Qxf4#
- 1...c4
- 2.Se6#
- 2.Qb6#
- 1...Rh6
- 2.Bc3#
- 2.Qxf4#
- 1...Be5
- 2.Se6#
- 2.Qxe5#
- 1...Bd7
- 2.Bc3#
- 1...Bf7
- 2.Bc3#
- 1...Sd1
- 2.Se6#
- 2.Rd3#
- 1...Sd3
- 2.Bc3#
- 2.Rxd3#
- 1...Sa4
- 2.Se6#
- 2.Rd3#
- 1...b4
- 2.Se6#
- 1...Bg6!
- threat
- 1.Sd6?
- threat
- 2.Sb3#
- 2.Sf5#
- 2.Bc3#
- 1...Rxe1
- 2.Sf5#
- 1...Rxh7
- 2.Sf5#
- 1...c4
- 2.Qb6#
- 1...Bg6
- 2.Sc6#
- 1...Rh5
- 2.Sb3#
- 2.Bc3#
- 1...Bd7
- 2.Sb3#
- 2.Bc3#
- 1...Sd1
- 2.Sb3#
- 2.Sf5#
- 2.Rd3#
- 1...Sa4
- 2.Sb3#
- 2.Sf5#
- 2.Rd3#
- 1...b4
- 2.Sb3#
- 2.Sf5#
- 1...Be5!
- threat
- 1.Sf6?
- threat
- 2.Bc3#
- 2.Qe5#
- 1...Rxh7
- 2.Qxf4#
- 2.Qe5#
- 1...Bxf6
- 2.Bc3#
- 1...c4
- 2.Qb6#
- 1...Bg6
- 2.Qe5#
- 1...Rh5
- 2.Bc3#
- 2.Qxf4#
- 1...Sd1
- 2.Rd3#
- 2.Qe5#
- 1...Sd3
- 2.Bc3#
- 2.Rxd3#
- 1...Sa4
- 2.Rd3#
- 2.Qe5#
- 1...Sc4
- 2.Sb3#
- 2.Bc3#
- 2.Rd3#
- 1...b4
- 2.Qe5#
- 1...Rxe1!
- threat
- 1.Sb3+?
- 1...Ke3
- 2.Sf6#
- 1...Kc4
- 2.Sd6#
- 1...Kd3!
- 1...Ke3
- 1.Sc6+?
- 1...Kc4
- 2.Sd2#
- 2.Sd6#
- 1...Bxc6!
- 1...Kc4
- 1.Bc3+?
- 1...Kd3
- 2.Sf2#
- 2.Sxc5#
- 1...Ke3!
- 1...Kd3
- 1.Rc3?
- threat
- 2.Sb3#
- 1...dxe4
- 2.Qd6#
- 1...c4
- 2.Qb6#
- 1...Sd3!
- threat
- 1.Sg3?
- Keys
- 1.Sd2!
- threat
- 2.Sdb3#
- 1...Rxe1
- 2.Sxf3#
- 1...Rxh7
- 2.Qxf4#
- 1...c4
- 2.Qb6#
- 1...Be5
- 2.Qxe5#
- 1...Bg6
- 2.Sc6#
- threat
- 1.Sd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::B(A)
- R(a);N_GUARD::B(A),XR(a)
- B(k);N_GUARD::QAB1(H),XB(k)
- B(k);N_GUARD::QAB1(H)
- P(h);OGATEB::QAB(H)
- P(i);OGATEB,XS(C)::QAR2(H)
- Tries
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(a);XB(A)::S(C)
- P(e);XS(C)::B(A)
- P(h);OGATEB::QAB(H)
- B(k);N_GUARD::QAB1(H),XB(k)
- B(l);::B(A)
- P(g);::S(C)
- Refutation
- B(l);
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XB(A)::S(C),XP(c)
- R(f);N_GUARD,XB(G)::QAR2(H),XP(e)
- B(l);::B(A)
- P(g);::S(C)
- Refutation
- B(l);
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- R(a);XB(A)::S(C)
- R(f);XB(G)::S(C)
- P(h);OGATEB::QAB(H)
- B(l);N_GUARD::S(D)
- Refutation
- B(k);
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- B(k);XS(C)::B(A)
- P(h);OGATEB::QAB(H)
- B(l);::QAB1(H)
- P(g);::QAB1(H)
- Refutation
- R(a);XB(A)
- Try
- S(D);CHECK
- Vars
- K(d);S_FLIGHT::R(F)+S(C)
- K(d);P-FLIGHT::S(C)
- Refutation
- K(d);P-FLIGHT
- Try
- S(D);CHECK
- Refutation
- B(l);XS(D)
- Try
- B(A);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- R(B);
- Threat
- S(D)
- Vars
- P(i);OGATEB,XS(C)::QAR2(H)
- P(h);OGATEB::QAB(H)
- Refutation
- S(b);
- Try
- Actual
- S(C);
- Threat
- S(C)
- Vars
- R(a);N_GUARD,XB(A)::S(C),XP(c)
- R(f);N_GUARD,XB(G)::QAR2(H),XP(e)
- P(h);OGATEB::QAB(H)
- B(k);N_GUARD::QAB1(H),XB(k)
- B(l);N_GUARD::S(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).