MESON Chess Problem Database
Problem Display
PID: 97874 (5N1K/3b1p2/1p1P1k2/6RP/4p1r1/3NBqpB/8/1n1Q1R2 w - - 0 1)
Groeneveld, Cornelis
Problem (Zagreb), 1954
#2
10 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Sh7#
- 1...Rh4
- 2.Sxd7#
- 2.Sh7#
- 1...Rxg5
- 2.Sxd7#
- 2.Sh7#
- 1...Be6
- 2.Sh7#
- 1...Sd2
- 2.Qa1#
- 1...Sa3
- 2.Qa1#
- 1...Rf4
- Tries
- 1.Se1?
- threat
- 2.Qd4#
- 1...Rxg5
- 2.Sxd7#
- 1...Rf4
- 2.Sh7#
- 1...Sd2
- 2.Qa1#
- 1...Qf4!
- threat
- 1.Sb4?
- threat
- 2.Sd5#
- 2.Qd4#
- 1...Rxg5
- 2.Sxd7#
- 1...Qf5
- 2.Qd4#
- 1...Rf4
- 2.Sh7#
- 1...Bf5
- 2.Qd4#
- 1...Sd2
- 2.Sd5#
- 2.Qa1#
- 1...Bc6
- 2.Qd4#
- 1...Be6
- 2.Sh7#
- 2.Qd4#
- 1...Sc3
- 2.Qd4#
- 1...Qf4!
- threat
- 1.Sc5?
- threat
- 2.Scxd7#
- 2.Sfxd7#
- 2.Sh7#
- 2.Qd4#
- 1...Rxg5
- 2.Scxd7#
- 2.Sfxd7#
- 1...Qf4
- 2.Sxe4#
- 2.Sh7#
- 1...Qf5
- 2.Scxd7#
- 2.Sfxd7#
- 2.Qd4#
- 1...Rf4
- 2.Sh7#
- 1...Bf5
- 2.Qd4#
- 1...Sd2
- 2.Scxd7#
- 2.Sfxd7#
- 2.Sh7#
- 2.Qa1#
- 1...Ba4
- 2.Sh7#
- 2.Qd4#
- 1...Bb5
- 2.Sh7#
- 2.Qd4#
- 1...Bc6
- 2.Sh7#
- 2.Qd4#
- 1...Be6
- 2.Sh7#
- 2.Qd4#
- 1...Bc8
- 2.Sh7#
- 2.Qd4#
- 1...Be8
- 2.Sh7#
- 2.Qd4#
- 1...bxc5!
- threat
- 1.Rxf3+?
- 1...Rf4
- 2.Sh7#
- 1...Bf5
- 2.Rfxf5#
- 2.Rgxf5#
- 1...exf3!
- 1...Rf4
- 1.Rg6+?
- 1...Kf5
- 2.Bxg4#
- 1...Rxg6
- 2.Sxd7#
- 2.Sh7#
- 1...fxg6!
- 1...Kf5
- 1.Qb3?
- threat
- 2.Sxd7#
- 2.Sh7#
- 1...Qf4
- 2.Sh7#
- 1...Rf4
- 2.Sh7#
- 1...Ba4
- 2.Sh7#
- 1...Bb5
- 2.Sh7#
- 1...Bc6
- 2.Sh7#
- 1...Be6
- 2.Sh7#
- 1...Bc8
- 2.Sh7#
- 1...Be8
- 2.Sh7#
- 1...Bf5!
- threat
- 1.Qxf3+?
- 1...Rf4
- 2.Sh7#
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...exf3!
- 1...Rf4
- 1.Se1?
- Keys
- 1.Sf2!
- threat
- 2.Qd4#
- 1...Qxd1
- 2.Sxe4#
- 2.Sxg4#
- 1...Qxe3
- 2.Sxe4#
- 1...Rxg5
- 2.Sxd7#
- 1...Qf4
- 2.Sxe4#
- 1...Qf5
- 2.Sxg4#
- 1...Rf4
- 2.Sh7#
- 1...Sd2
- 2.Qa1#
- threat
- 1.Sf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- R(e);N_SPINQ(b)::S(I)
- B(h);SBLOCK::S(I)
- S(a);OGATE::QAB(A)
- Tries
- Try
- S(C);
- Threat
- QAB(A)
- Vars
- R(e);XR(F)::S(I),XB(h)
- R(e);N_SPINQ(b)::S(I)
- S(a);OGATE::QAB(A)
- Refutation
- Q(b);
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(e);XR(F)::S(I),XB(h)
- Q(b);::QAB(A)
- R(e);N_SPINQ(b)::S(I)
- B(h);N_SPINQ(b)::QAB(A)
- B(h);::QAB(A)
- S(a);::QAB(A)
- Refutation
- Q(b);
- Try
- S(C);
- Threat
- DUALS(4)
- Vars
- R(e);N_SPINQ(b)::S(I)
- B(h);N_SPINQ(b)::QAB(A)
- Refutation
- P(f);XS(C)
- Try
- R(B);CHECK,XQ(b)
- Vars
- R(e);P_SPINR(e)::S(I)
- Refutation
- P(d);XR(B)
- Try
- R(F);CHECK
- Vars
- K(g);P-FLIGHT,P_SPINR(e)::B(E),XR(e)
- Refutation
- P(i);XR(F)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(b);::S(I)
- R(e);N_SPINQ(b)::S(I)
- B(h);::S(I)
- Refutation
- B(h);N_SPINQ(b)
- Try
- Q(A);CHECK,XQ(b)
- Vars
- R(e);P_SPINR(e)::S(I)
- Refutation
- P(d);P_SPINP(d),XQ(A)
- Try
- Actual
- S(C);N_PINQ(b)
- Threat
- QAB(A)
- Vars
- Q(b);XB(D)::R(B)+S(C),DCHECK,XP(d)
- R(e);XR(F)::S(I),XB(h)
- Q(b);S_CUTR(e)::S(C),XP(d)
- Q(b);S_CUTB(h)::S(C),XR(e)
- R(e);::S(I)
- S(a);OGATE::QAB(A)
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).