MESON Chess Problem Database
Problem Display
PID: 109861 (2q5/3p1b2/1Nr3p1/1B4n1/1B1k2rb/4RQp1/2pN1Pn1/2K5 w - - 0 1)
Hoeg, Nils
1st Prize, Match: Moscow - Rostov, 1921
#2
8 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Qf6#
- 1...Rc4
- 2.Sb3#
- 2.Qf6#
- 1...Re6
- 2.Sb3#
- 2.Qd5#
- 1...Rf6
- 2.Qxf6#
- 1...Rc7
- 2.Qf6#
- 1...Bb3
- 2.Sxb3#
- 1...Bd5
- 2.Qxd5#
- 1...Be6
- 2.Qf6#
- 1...Be8
- 2.Sb3#
- 2.Qd5#
- 1...Sxe3
- 2.Qxe3#
- 1...Sxf3
- 2.Sxf3#
- 1...Se6
- 2.Sb3#
- 2.Qd5#
- 1...d5
- 2.Sb3#
- 1...d6
- 2.Qf6#
- 1...Rc3
- Tries
- 1.Re6?
- threat
- 2.Sb3#
- 2.Qd5#
- 2.Qd3#
- 2.Qf6#
- 1...Rxb6
- 2.Sb3#
- 2.Qd3#
- 1...Rxe6
- 2.Qd5#
- 1...Bxe6
- 2.Qf6#
- 1...Sxf3
- 2.Sb3#
- 2.Sxf3#
- 1...Sxe6
- 2.Qd5#
- 1...Qc7
- 2.Sb3#
- 2.Qd5#
- 2.Qd3#
- 1...Qb8
- 2.Sb3#
- 2.Qd5#
- 2.Qd3#
- 1...Qd8
- 2.Sb3#
- 2.Qd5#
- 2.Qd3#
- 1...Qh8
- 2.Sb3#
- 2.Qd5#
- 2.Qd3#
- 1...Re4
- 2.Sb3#
- 2.Qd3#
- 1...Rf4
- 2.Sb3#
- 2.Qd5#
- 2.Qd3#
- 1...Rc3
- 2.Qd5#
- 2.Qf6#
- 1...Rc4
- 2.Sb3#
- 2.Qd5#
- 1...Rc5
- 2.Sb3#
- 2.Qd3#
- 1...Rd6
- 2.Sb3#
- 2.Qd3#
- 2.Qf6#
- 1...Se1
- 2.Sb3#
- 2.Qd5#
- 2.Qe3#
- 2.Qf6#
- 1...Se3
- 2.Sb3#
- 2.Qxe3#
- 2.Qf6#
- 2.fxe3#
- 1...Sf4
- 2.Sb3#
- 2.Qe3#
- 1...Sh3
- 2.Sb3#
- 2.Qd5#
- 2.Qd3#
- 1...Se4
- 2.Sb3#
- 2.Qd3#
- 1...Sh7
- 2.Sb3#
- 2.Qd5#
- 2.Qd3#
- 1...d5
- 2.Sb3#
- 2.Qxd5#
- 2.Qd3#
- 2.Qf6#
- 1...dxe6!
- threat
- 1.Re8?
- threat
- 2.Qd3#
- 1...Bxe8
- 2.Qd5#
- 1...Sxf3
- 2.Sxf3#
- 1...Re6
- 2.Qd5#
- 1...Be6
- 2.Qf6#
- 1...Se6
- 2.Qd5#
- 1...Rc3
- 2.Qf6#
- 1...Rc4
- 2.Sb3#
- 1...Bc4
- 2.Qc3#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 2.fxe3#
- 1...Sf4
- 2.Qe3#
- 1...Qxe8!
- threat
- 1.Qe4+?
- 1...Sxe4
- 2.Sf3#
- 1...Rxe4!
- 1...Sxe4
- 1.Qxg4+?
- 1...Se4
- 2.Sf3#
- 2.Rxe4#
- 2.Qxe4#
- 1...Sf4!
- 1...Se4
- 1.Re6?
- Keys
- 1.Re7!
- threat
- 2.Qd3#
- 1...Sxf3
- 2.Sxf3#
- 1...Re6
- 2.Qd5#
- 1...Be6
- 2.Qf6#
- 1...Se6
- 2.Qd5#
- 1...Rc3
- 2.Qf6#
- 1...Rc4
- 2.Sb3#
- 1...Bc4
- 2.Qc3#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 2.fxe3#
- 1...Sf4
- 2.Qe3#
- threat
- 1.Re7!
This is a version of 21880
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 7
- Sets
- R(h);N_GUARD::QAB(E)
- R(h);N_GUARD::QAB(E),XR(h)
- B(k);N_GUARD::S(B),XB(k)
- B(k);N_GUARD::QAR1(E),XB(k)
- B(k);S_CUTR(h)::QAB(E)
- S(b);OGATE,XR(D)::QAB1(E),XS(b)
- S(g);XQ(E)::S(B),XS(g)
- P(j);S_CUTB(k)::S(B)
- P(j);S_CUTR(h)::QAB(E)
- Tries
- Try
- R(D);
- Threat
- DUALS(4)
- Vars
- R(h);XR(D)::QAR1(E)
- B(k);XR(D)::QAB(E)
- S(g);XR(D)::QAR1(E)
- Refutation
- P(j);XR(D)
- Try
- R(D);
- Threat
- QAR1(E)
- Vars
- B(k);N_GUARD,XR(D)::QAR1(E)
- S(g);XQ(E)::S(B),XS(g)
- R(h);S_CUTB(k)::QAR1(E)
- B(k);S_CUTR(h)::QAB(E)
- S(g);S_CUTB(k)::QAR1(E)
- R(h);N_GUARD::QAB(E)
- R(h);S_CUTB(k)::S(B)
- B(k);S_CUTR(h)::QAB1(E)
- S(b);N_GUARD::QAB1(E)
- Refutation
- Q(l);XR(D)
- Try
- Q(E);CHECK
- Vars
- S(g);XQ(E)::S(B)
- Refutation
- R(e);XQ(E)
- Try
- Q(E);CHECK,XR(e)
- Refutation
- S(b);P_SPINS(b)
- Try
- Actual
- R(D);
- Threat
- QAR1(E)
- Vars
- S(g);XQ(E)::S(B),XS(g)
- R(h);S_CUTB(k)::QAR1(E)
- B(k);S_CUTR(h)::QAB(E)
- S(g);S_CUTB(k)::QAR1(E)
- R(h);N_GUARD::QAB(E)
- R(h);S_CUTB(k)::S(B)
- B(k);S_CUTR(h)::QAB1(E)
- S(b);N_GUARD::QAB1(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).