MESON Chess Problem Database
Problem Display
PID: 231167 (br6/N2P2p1/3Q2p1/K2p4/3k4/2R2Pn1/1p1B2nb/2N5 w - - 0 1)
Bostrom, Ernst
Prize, Sveden, 1927
#2
8 + 10
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.Sxb3#
- 1...Rb5+
- 2.Sxb5#
- 1...Rb7
- 2.Sc6#
- 1...Rc8
- 2.Sb3#
- 2.Sb5#
- 1...Rd8
- 2.Sb3#
- 2.Sb5#
- 1...Re8
- 2.Sb3#
- 2.Sb5#
- 1...Rf8
- 2.Sb3#
- 2.Sb5#
- 1...Rg8
- 2.Sb3#
- 2.Sb5#
- 1...Rh8
- 2.Sb3#
- 2.Sb5#
- 1...Bc6
- 2.Sxc6#
- 1...Bb7
- 2.Sb3#
- 2.Sb5#
- 1...Sf1
- 2.Se2#
- 1...Sh1
- 2.Se2#
- 1...Se2
- 2.Sxe2#
- 1...Se4
- 2.Se2#
- 1...Sf5
- 2.Se2#
- 1...Sh5
- 2.Se2#
- 1...Rb3
- Tries
- 1.Sd3?
- threat
- 2.Qc5#
- 2.Qe5#
- 1...Rb5+
- 2.Sxb5#
- 1...Rc8
- 2.Sb5#
- 2.Qe5#
- 1...Re8
- 2.Sb5#
- 2.Qb4#
- 2.Qc5#
- 2.Qb6#
- 1...Sf1
- 2.Qc5#
- 1...Sh1
- 2.Qc5#
- 1...Se2
- 2.Qc5#
- 1...Sf5
- 2.Qc5#
- 1...Sh5
- 2.Qc5#
- 1...Se4!
- threat
- 1.Be3+?
- 1...Kxc3
- 2.Qc5#
- 1...Sxe3!
- 1...Kxc3
- 1.Bf4?
- threat
- 2.Be5#
- 2.Qc5#
- 2.Qe5#
- 1...Rb5+
- 2.Sxb5#
- 1...Kxc3
- 2.Qc5#
- 1...Rc8
- 2.Sb5#
- 2.Be5#
- 2.Qe5#
- 1...Re8
- 2.Sb5#
- 2.Qb4#
- 2.Qc5#
- 1...Sf1
- 2.Se2#
- 2.Qc5#
- 2.Qe5#
- 1...Sh1
- 2.Se2#
- 2.Qc5#
- 2.Qe5#
- 1...Se2
- 2.Sxe2#
- 2.Qc5#
- 2.Qe5#
- 1...Se4
- 2.Se2#
- 2.Qe5#
- 1...Sf5
- 2.Se2#
- 2.Qc5#
- 2.Qe5#
- 1...Sh5
- 2.Se2#
- 2.Qc5#
- 2.Qe5#
- 1...Sxf4!
- threat
- 1.Qf4+?
- 1...Se4
- 2.Se2#
- 1...Sxf4!
- 1...Se4
- 1.Qe7?
- threat
- 2.Qxg7#
- 1...Rb5+
- 2.Sxb5#
- 1...Re8
- 2.Sb3#
- 2.Sb5#
- 1...Rf8
- 2.Sb3#
- 2.Sb5#
- 1...Rg8
- 2.Sb3#
- 2.Sb5#
- 1...Sf1
- 2.Se2#
- 1...Sh1
- 2.Se2#
- 1...Se2
- 2.Sxe2#
- 1...Se4
- 2.Se2#
- 1...Sf5
- 2.Se2#
- 1...Sh5
- 2.Se2#
- 1...Rb6!
- threat
- 1.d8S?
- threat
- 2.Se6#
- 1...Rb5+
- 2.Sxb5#
- 1...Rxd8
- 2.Sb3#
- 2.Sb5#
- 1...Sf4!
- threat
- 1.Sd3?
- Keys
- 1.Bh6!
- threat
- 2.Bxg7#
- 1...Rb5+
- 2.Sxb5#
- 1...Kxc3
- 2.Qc5#
- 1...gxh6
- 2.Qf6#
- 1...Re8
- 2.Sb5#
- 1...Rf8
- 2.Sb5#
- 1...Rg8
- 2.Sb5#
- 1...Sf1
- 2.Se2#
- 1...Sh1
- 2.Se2#
- 1...Se2
- 2.Sxe2#
- 1...Se4
- 2.Se2#
- 1...Sf5
- 2.Se2#
- 1...Sh5
- 2.Se2#
- threat
- 1.Bh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- R(j);N_GUARD::S(A),XR(j)
- R(j);CHECK,N_GUARD::S(G),XR(j)
- R(j);S_CUTB(i)::S(G)
- B(i);N_GUARD::S(G),XB(i)
- S(d);N_GUARD::S(A)
- S(d);N_GUARD::S(A),XS(d)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- R(j);CHECK,N_GUARD::S(G),XR(j)
- S(d);::QAB1(F)
- Refutation
- S(d);
- Try
- B(B);CHECK
- Vars
- K(e);N_SPINP(f),S_FLIGHT,XR(C)::QAR2(F)
- Refutation
- S(b);XB(B)
- Try
- B(B);
- Threat
- DUALS(3)
- Vars
- R(j);CHECK,N_GUARD::S(G),XR(j)
- K(e);N_SPINP(f),S_FLIGHT,XR(C)::QAR2(F)
- Refutation
- S(b);XB(B)
- Try
- Q(F);CHECK,N_PINP(f)
- Vars
- S(d);P_SPINS(d)::S(A)
- Refutation
- S(b);XQ(F)
- Try
- Q(F);N_PINP(f)
- Threat
- QAB(F),XP(h)
- Vars
- R(j);CHECK,N_GUARD::S(G),XR(j)
- S(d);N_GUARD::S(A)
- S(d);N_GUARD::S(A),XS(d)
- Refutation
- R(j);
- Try
- P(H);
- Threat
- S(H)
- Vars
- R(j);CHECK,N_GUARD::S(G),XR(j)
- Refutation
- S(b);
- Try
- Actual
- B(B);
- Threat
- B(B),XP(h)
- Vars
- R(j);CHECK,N_GUARD::S(G),XR(j)
- K(e);N_SPINP(f),S_FLIGHT,XR(C)::QAR2(F)
- P(h);N_GUARD,XB(B)::QAB(F)
- R(j);N_GUARD::S(G)
- S(d);N_GUARD::S(A)
- S(d);N_GUARD::S(A),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).