MESON Chess Problem Database
Problem Display
PID: 6484 (b7/q1N2r2/1pRp4/2P4r/2kN4/p6p/P2Q2Bb/2Kn4 w - - 0 1)
af Hallstrom, Edvard Johannes Gabriel
1st Prize, Turku Chess Club, 1929
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Rh4
- 2.Bd5#
- 1...Rxc5
- 2.Bd5#
- 1...Rd5
- 2.Bxd5#
- 1...Rh6
- 2.Bd5#
- 1...Rhh7
- 2.Bd5#
- 1...Rh8
- 2.Bd5#
- 1...Rf1
- 2.Bxf1#
- 1...Rd7
- 2.Bf1#
- 1...Rg7
- 2.Bf1#
- 1...Rfh7
- 2.Bf1#
- 1...Bf4
- 2.Bf1#
- 1...Be5
- 2.Bd5#
- 1...Rh4
- Tries
- 1.cxb6+?
- 1...Rc5
- 2.Bd5#
- 1...Bxc6!
- 1...Rc5
- 1.cxd6+?
- 1...Rc5
- 2.Bd5#
- 1...Bxc6!
- 1...Rc5
- 1.cxb6+?
- Keys
- 1.Sdb5!
- threat
- 2.Qd4#
- 1...Qxc7
- 2.Sxa3#
- 1...Rxc7
- 2.Bf1#
- 1...Rf4
- 2.Sxd6#
- 1...Rh4
- 2.Bd5#
- 1...Rd5
- 2.Bxd5#
- 1...Bg1
- 2.Sxd6#
- 1...Bf4
- 2.Bf1#
- 1...Be5
- 2.Bd5#
- threat
- 1.Sdb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(f);N_GUARD::B(D)
- R(f);N_GUARD,P_SPINR(f),XP(F)::B(D)
- R(f);N_GUARD::B(D),XR(f)
- R(j);N_GUARD::B(D),XR(j)
- R(j);N_GUARD::B(D)
- B(b);P_PINQ(C),S_CUTR(j)::B(D)
- B(b);S_CUTR(f)::B(D)
- Tries
- Try
- P(F);CHECK,XP(g)
- Vars
- R(f);P_SPINR(f)::B(D)
- Refutation
- B(k);XR(G)
- Try
- P(F);CHECK,XP(h)
- Vars
- R(f);P_SPINR(f)::B(D)
- Refutation
- B(k);XR(G)
- Try
- Actual
- S(E);
- Threat
- QAR1(C)
- Vars
- Q(i);N_GUARD,XS(H)::S(E),XP(c)
- R(j);N_GUARD,XS(H)::B(D)
- R(j);S_CUTB(b)::S(E),XP(h)
- R(f);N_GUARD::B(D)
- R(f);N_GUARD::B(D),XR(f)
- B(b);N_GUARD::S(E),XP(h)
- B(b);P_PINQ(C),S_CUTR(j)::B(D)
- B(b);S_CUTR(f)::B(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).