MESON Chess Problem Database
Problem Display
PID: 224805 (1B5b/7q/2N4R/PBk1nn1Q/8/PbN5/3R4/K7 w - - 0 1)
Josc, M
Ravenscroft, Frank
Suomen Shakki, 1956
#2
10 + 6
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qg6
- 2.Ba7#
- 1...Qg8
- 2.Ba7#
- 1...Qxh6
- 2.Ba7#
- 1...Qa7
- 2.Bxa7#
- 1...Bd1
- 2.Rd5#
- 1...Bc2
- 2.Rd5#
- 1...Ba4
- 2.Rd5#
- 1...Bd5
- 2.Rxd5#
- 1...Bf7
- 2.Ba7#
- 1...Bg7
- 2.Ba7#
- 1...Sd3
- 2.Bd6#
- 1...Sf3
- 2.Bd6#
- 1...Sc4
- 2.Rd5#
- 1...Sg4
- 2.Bd6#
- 1...Sxc6
- 2.Bd6#
- 2.Rxc6#
- 1...Sg6
- 2.Bd6#
- 1...Sd7
- 2.Bd6#
- 1...Sf7
- 2.Ba7#
- 1...Se3
- 2.Bd6#
- 1...Sg3
- 2.Bd6#
- 1...Sd4
- 2.Bd6#
- 1...Sh4
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sxh6
- 2.Bd6#
- 1...Se7
- 2.Bd6#
- 2.Ba7#
- 1...Sg7
- 2.Bd6#
- 2.Ba7#
- 1...Qg6
- Tries
- 1.Bc7?
- threat
- 2.Bb6#
- 1...Sc4
- 2.Rd5#
- 1...Sd7
- 2.Bd6#
- 1...Qxc7!
- threat
- 1.Rd7?
- threat
- 2.Ba7#
- 1...Sxc6
- 2.Rxc6#
- 1...Sxd7
- 2.Bd6#
- 1...Sc4
- 2.Rd5#
- 1...Qxd7!
- threat
- 1.Qxf5?
- threat
- 2.Bd6#
- 2.Qf2#
- 1...Qxf5
- 2.Bd6#
- 2.Ba7#
- 1...Qxh6
- 2.Ba7#
- 1...Qg6
- 2.Ba7#
- 2.Qf2#
- 1...Qc7
- 2.Qf2#
- 1...Qe7
- 2.Qf2#
- 1...Qf7
- 2.Bd6#
- 1...Qd7!
- threat
- 1.Bc7?
- Keys
- 1.a4!
- threat
- 2.Se4#
- 1...Bxa4
- 2.Rd5#
- 1...Sxc6
- 2.Bd6#
- 1...Sxh6
- 2.Bd6#
- 1...Bc2
- 2.Rd5#
- 1...Bd5
- 2.Rxd5#
- 1...Sd3
- 2.Bd6#
- 1...Sf3
- 2.Bd6#
- 1...Sc4
- 2.Rd5#
- 1...Sg4
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...Sd7
- 2.Bd6#
- 1...Sf7
- 2.Ba7#
- 1...Se3
- 2.Bd6#
- 1...Sg3
- 2.Bd6#
- 1...Sd4
- 2.Bd6#
- 1...Sh4
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Se7
- 2.Bd6#
- 2.Ba7#
- 1...Sg7
- 2.Bd6#
- 2.Ba7#
- threat
- 1.a4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(e);N_GUARD::B(J)
- Q(e);N_GUARD,XR(I)::B(J)
- Q(e);N_GUARD::B(J),XQ(e)
- B(a);N_GUARD::R1(B)
- B(a);N_GUARD::R1(B),XB(a)
- B(a);S_CUTQ(e)::B(J)
- B(f);S_CUTQ(e)::B(J)
- S(c);P_PINS(D),P_SPINS(d)::B(J)
- S(c);P_PINS(D),P_SPINS(d),S_CUTB(a)::R1(B)
- S(c);P_PINS(D),P_SPINS(d),S_CUTQ(e)::B(J)
- S(d);N_GUARD,P_SPINS(c)::B(J)
- S(d);N_GUARD,P_SPINS(c)::B(J),XS(d)
- S(d);N_GUARD,P_SPINS(c),XR(I)::B(J)
- Tries
- Try
- B(J);
- Threat
- B(J)
- Vars
- S(c);P_PINS(D),P_SPINS(d),S_CUTB(a)::R1(B)
- S(c);P_PINS(D),P_SPINS(d)::B(J)
- Refutation
- Q(e);XB(J)
- Try
- R(B);
- Threat
- B(J)
- Vars
- S(c);OGATE,P_PINS(D),P_SPINS(d),XS(H)::R1(I),XS(c)
- S(c);P_PINS(D),P_SPINS(d),XR(B)::B(J)
- S(c);P_PINS(D),P_SPINS(d),S_CUTB(a)::R1(B)
- Refutation
- Q(e);XR(B)
- Try
- Q(G);P_PINS(c),XS(d)
- Threat
- DUALS(2)
- Vars
- Q(e);N_GUARD,XR(I)::B(J)
- Q(e);::QAB(G)
- Q(e);::B(J)
- Refutation
- Q(e);
- Try
- Actual
- P(C);
- Threat
- S(D)
- Vars
- B(a);N_GUARD,XP(C)::R1(B)
- S(c);P_PINS(D),P_SPINS(d),XS(H)::B(J)
- S(d);N_GUARD,P_SPINS(c),XR(I)::B(J)
- B(a);N_GUARD::R1(B)
- B(a);N_GUARD::R1(B),XB(a)
- S(c);P_PINS(D),P_SPINS(d)::B(J)
- S(c);P_PINS(D),P_SPINS(d),S_CUTB(a)::R1(B)
- S(c);P_PINS(D),P_SPINS(d),S_CUTQ(e)::B(J)
- S(d);N_GUARD,P_SPINS(c)::B(J)
- S(d);N_GUARD,P_SPINS(c)::B(J),XS(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).