MESON Chess Problem Database
Problem Display
PID: 196741 (Q2n4/3P3p/2R1RP2/1N1k2n1/1P4NK/2p2p2/q2rrp2/b2b4 w - - 0 1)
Seilberger, Johann Joseph Petrus Adrianus
Tijdschrift vd NSB, 1919
#2
9 + 12
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Rcd6#
- 1...Rd4
- 2.Sc7#
- 1...Re3
- 2.Sxe3#
- 1...Re4
- 2.Red6#
- 1...Re5
- 2.Rxe5#
- 1...Rxe6
- 2.Rc5#
- 1...Se4
- 2.Re5#
- 1...Sgxe6
- 2.Rc5#
- 1...Sxc6
- 2.Qxc6#
- 1...Sdxe6
- 2.Rc5#
- 1...c2
- 2.Qxa2#
- 1...Qc4
- Tries
- 1.Qxa2+?
- 1...Bb3
- 2.Qxb3#
- 1...Rxa2!
- 1...Bb3
- 1.Qxa2+?
- Keys
- 1.f7!
- threat
- 2.Sf6#
- 1...Rxe6
- 2.Rc5#
- 1...Sgxe6
- 2.Rc5#
- 1...Sxc6
- 2.Qxc6#
- 1...Sdxe6
- 2.Rc5#
- 1...Qc4
- 2.Rcd6#
- 1...Rd4
- 2.Sc7#
- 1...Re4
- 2.Red6#
- 1...Se4
- 2.Re5#
- 1...c2
- 2.Qxa2#
- threat
- 1.f7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- Q(c);P_PINS(B),SBLOCK::QAB(I)+R(E),DCHECK
- R(d);P_PINS(B),SBLOCK::S(D)
- R(e);N_GUARD::S(B),XR(e)
- R(e);P_PINS(B),SBLOCK::R1(F)
- R(e);N_GUARD::R1(F),XR(e)
- R(e);SBLOCK,XR(F)::QAB(I)+R(E),DCHECK
- S(j);S_CUTR(e)::R1(F)
- S(j);SBLOCK,XR(F)::QAB(I)+R(E),DCHECK
- S(l);OGATE,P_SPINS(l),XR(E)::QAB1(I),XS(l)
- S(l);SBLOCK,XR(F)::QAB(I)+R(E),DCHECK
- P(g);S_CUTB(b),S_CUTR(d)::QAB(I),XQ(c)
- Tries
- Try
- Q(I);CHECK,XQ(c)
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAB(I),XB(b)
- Refutation
- R(d);XQ(I)
- Try
- Actual
- P(G);
- Threat
- S(B)
- Vars
- R(e);SBLOCK,XR(F)::QAB(I)+R(E),DCHECK
- S(j);SBLOCK,XR(F)::QAB(I)+R(E),DCHECK
- S(l);OGATE,P_SPINS(l),XR(E)::QAB1(I),XS(l)
- S(l);SBLOCK,XR(F)::QAB(I)+R(E),DCHECK
- Q(c);P_PINS(B),SBLOCK::QAB(I)+R(E),DCHECK
- R(d);P_PINS(B),SBLOCK::S(D)
- R(e);P_PINS(B),SBLOCK::R1(F)
- S(j);S_CUTR(e)::R1(F)
- P(g);S_CUTB(b),S_CUTR(d)::QAB(I),XQ(c)
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).