MESON Chess Problem Database
Problem Display
PID: 176105 (5r1N/p1RpBp2/5p2/4kPP1/3rp1K1/2P1N3/5p2/1Q6 w - - 0 1)
Schafft, Willy
Schach-Echo, 1936
#2
9 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Sc4#
- 1...Ra8
- 2.Sxf7#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...d6
- 2.Bxf6#
- 1...Rd5
- Tries
- 1.Sc4+?
- 1...Kd5
- 2.Rc5#
- 2.Qb5#
- 2.Qb7#
- 1...Rxc4!
- 1...Kd5
- 1.Rc5+?
- 1...Rd5
- 2.Sc4#
- 2.Rxd5#
- 1...d5!
- 1...Rd5
- 1.Rc6?
- threat
- 2.Bxf6#
- 1...fxg5
- 2.Bf6#
- 1...Rd6
- 2.Bxd6#
- 1...dxc6!
- threat
- 1.Rxd7?
- threat
- 2.Bxf6#
- 2.cxd4#
- 1...fxg5
- 2.cxd4#
- 1...Rd1
- 2.Sc4#
- 2.Bxf6#
- 1...Rd2
- 2.Sc4#
- 2.Bxf6#
- 1...Rd3
- 2.Sc4#
- 2.Bxf6#
- 1...Ra4
- 2.Bd6#
- 2.Bxf6#
- 2.Rd5#
- 2.Qb5#
- 1...Rb4
- 2.Bd6#
- 2.Bxf6#
- 2.Rd5#
- 1...Rc4
- 2.Sxc4#
- 2.Bd6#
- 2.Bxf6#
- 2.Rd5#
- 1...Rd5
- 2.Sc4#
- 2.Bxf6#
- 2.Rxd5#
- 1...Rd6
- 2.Bxd6#
- 1...Rxd7!
- threat
- 1.Qb4?
- threat
- 2.Bxf6#
- 2.Qxd4#
- 2.cxd4#
- 1...fxg5
- 2.Qxd4#
- 2.cxd4#
- 1...Rd1
- 2.Bxf6#
- 1...Rd2
- 2.Bxf6#
- 1...Rd3
- 2.Bxf6#
- 1...Rc4
- 2.Bd6#
- 2.Bxf6#
- 2.Qd6#
- 1...Rd5
- 2.Sc4#
- 2.Bxf6#
- 1...Rd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Rxb4!
- threat
- 1.Qb5+?
- 1...Rd5
- 2.Sc4#
- 2.Qxd5#
- 1...d5!
- 1...Rd5
- 1.Qb6?
- threat
- 2.Bxf6#
- 2.Qxd4#
- 2.Qxf6#
- 2.cxd4#
- 1...fxg5
- 2.Bf6#
- 2.Qxd4#
- 2.Qf6#
- 2.cxd4#
- 1...Rd1
- 2.Bxf6#
- 2.Qxf6#
- 1...Rd2
- 2.Bxf6#
- 2.Qxf6#
- 1...Rd3
- 2.Bxf6#
- 2.Qxf6#
- 1...Ra4
- 2.Bd6#
- 2.Bxf6#
- 2.Qd6#
- 2.Qxf6#
- 1...Rb4
- 2.Bd6#
- 2.Bxf6#
- 2.Qd6#
- 2.Qxf6#
- 1...Rc4
- 2.Bd6#
- 2.Bxf6#
- 2.Qd6#
- 2.Qxf6#
- 1...Rd5
- 2.Sc4#
- 2.Bxf6#
- 2.Qxf6#
- 1...Rd6
- 2.Bxd6#
- 2.Qxd6#
- 1...d6
- 2.Bxf6#
- 2.Qxd4#
- 2.cxd4#
- 1...axb6!
- threat
- 1.Sc4+?
- Keys
- 1.Qb8!
- threat
- 2.Rc5#
- 1...Rxb8
- 2.Sxf7#
- 1...Rd5
- 2.Sc4#
- 1...d5
- 2.Rc8#
- 1...d6
- 2.Bxf6#
- threat
- 1.Qb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- R(b);N_GUARD,SBLOCK::S(C)
- R(i);N_GUARD::S(I),XP(h)
- R(i);N_GUARD,P_PINP(F)::S(I),XP(h)
- P(g);SBLOCK::B(H),XP(e)
- Tries
- Try
- S(C);CHECK
- Refutation
- R(b);XS(C)
- Try
- R(G);CHECK
- Refutation
- P(g);P_SPINP(g)
- Try
- R(G);
- Threat
- B(H),XP(e)
- Vars
- P(e);XP(F)::B(H)
- R(b);N_GUARD::B(H),XR(b)
- Refutation
- P(g);XR(G)
- Try
- R(G);XP(g)
- Threat
- DUALS(2)
- Vars
- P(e);XP(F)::P(B),XR(b)
- R(b);N_GUARD::B(H),XR(b)
- Refutation
- R(b);XR(G)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(b);::B(H),XP(e)
- Refutation
- R(b);XQ(A)
- Try
- Q(A);CHECK
- Refutation
- P(g);P_SPINP(g)
- Try
- Q(A);
- Threat
- DUALS(4)
- Refutation
- P(f);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAB(A)+R(G),DCHECK
- Vars
- R(i);N_GUARD,XQ(A)::S(I),XP(h)
- R(b);N_GUARD,SBLOCK::S(C)
- P(g);N_GUARD,S_CUTR(b)::QAB(A)+R(G)
- P(g);SBLOCK::B(H),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).