MESON Chess Problem Database
Problem Display
PID: 193575 (1N3RK1/R2Bk2p/3p3p/1p1Q2n1/1p1n1N2/8/qp6/1r1r4 w - - 0 1)
Goethart, Gerhardus Hendrik
De Maasbode, 1915
#2
7 + 12
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qb3
- 2.Bh3#
- 2.Bg4#
- 2.Bxb5#
- 2.Bf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 1...Qc4
- 2.Bc6#
- 1...Qxd5+
- 2.Sxd5#
- 1...Sc2
- 2.Sc6#
- 1...Se2
- 2.Sc6#
- 1...Sb3
- 2.Sc6#
- 1...Sdf3
- 2.Sc6#
- 1...Sf5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sde6
- 2.Sc6#
- 1...Qb3
- Tries
- 1.Be8+?
- 1...Kd8
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bf7#
- 1...Qxa7!
- 1...Kd8
- 1.Qxa2?
- threat
- 2.Sd5#
- 2.Bh3#
- 2.Bg4#
- 2.Bxb5#
- 2.Bf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 1...Sf7
- 2.Sd5#
- 2.Qxf7#
- 1...Rbc1
- 2.Sd5#
- 2.Bc6#
- 1...Rdc1
- 2.Sd5#
- 2.Bc6#
- 1...Sc2
- 2.Sc6#
- 2.Bh3#
- 2.Bg4#
- 2.Bxb5#
- 2.Bf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 1...Se2
- 2.Sc6#
- 2.Bh3#
- 2.Bg4#
- 2.Bxb5#
- 2.Bf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 1...Sb3
- 2.Sc6#
- 2.Bh3#
- 2.Bg4#
- 2.Bxb5#
- 2.Bf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 1...Sdf3
- 2.Sc6#
- 2.Bh3#
- 2.Bg4#
- 2.Bxb5#
- 2.Bf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 1...Sf5
- 2.Sc6#
- 2.Bxb5#
- 2.Bxf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 1...Sc6
- 2.Sxc6#
- 2.Bxc6#
- 1...Sde6
- 2.Sc6#
- 2.Bxe6#
- 1...Sh3
- 2.Sd5#
- 2.Bxh3#
- 2.Bg4#
- 2.Bxb5#
- 2.Bf5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 2.Qf7#
- 1...Sge6
- 2.Sd5#
- 2.Bxe6#
- 1...d5!
- threat
- 1.Qc4?
- threat
- 2.Sd5#
- 1...d5
- 2.Qxb4#
- 2.Qc5#
- 1...Sc2
- 2.Sc6#
- 1...Se2
- 2.Sc6#
- 1...Sb3
- 2.Sc6#
- 1...Sdf3
- 2.Sc6#
- 1...Sf5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sde6
- 2.Sc6#
- 1...Qxc4+!
- threat
- 1.Qe6+?
- 1...Qxe6+
- 2.Bxe6#
- 1...Sdxe6
- 2.Sc6#
- 1...Sgxe6!
- 1...Qxe6+
- 1.Be8+?
- Keys
- 1.Qb3!
- threat
- 2.Sd5#
- 1...Qxb3+
- 2.Be6#
- 1...Sxb3
- 2.Sc6#
- 1...d5
- 2.Qxb4#
- 1...Sc2
- 2.Sc6#
- 1...Se2
- 2.Sc6#
- 1...Sdf3
- 2.Sc6#
- 1...Sf5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sde6
- 2.Sc6#
- threat
- 1.Qb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(c);N_GUARD::R(C)+B(D)
- Q(c);CHECK,XQ(B)::S(A),XQ(c)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD,N_PINQ(B)::S(E)
- S(f);N_GUARD::S(E),XS(f)
- Tries
- Try
- B(D);CHECK
- Refutation
- Q(c);N_PINQ(B),XR(C)
- Try
- Q(B);N_SPINQ(B),XQ(c)
- Threat
- DUALS(8)
- Refutation
- P(i);
- Try
- Q(B);
- Threat
- S(A)
- Vars
- S(f);N_GUARD::S(E)
- S(f);N_GUARD,N_PINQ(B)::S(E)
- S(f);N_GUARD::S(E),XS(f)
- Refutation
- Q(c);CHECK,XQ(B)
- Try
- Q(B);CHECK
- Vars
- Q(c);CHECK,OGATE,XQ(B)::R(C)+B(D),XQ(c)
- S(f);XQ(B)::S(E)
- Refutation
- S(h);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- S(A)
- Vars
- Q(c);CHECK,N_GUARD,XQ(B)::R(C)+B(D)
- S(f);N_GUARD,XQ(B)::S(E)
- P(i);N_PINQ(B)::QAB(B),XP(e)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD,N_PINQ(B)::S(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).