MESON Chess Problem Database
Problem Display
PID: 250038 (6q1/2N5/3p4/1P2b3/3k3r/P2PN3/3K1R2/6Q1 w - - 0 1)
Wiarda, Georg
Deutsche Kreuzwortratsel-Zeitung, 1927
#2
8 + 5
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Sxe6#
- 1...Qh7
- 2.Se6#
- 1...Qxg1
- 2.Se6#
- 1...Qg2
- 2.Se6#
- 1...Qg3
- 2.Se6#
- 1...Qg5
- 2.Se6#
- 1...Qg7
- 2.Se6#
- 1...Qa8
- 2.Se6#
- 1...Qb8
- 2.Se6#
- 1...Qd8
- 2.Se6#
- 1...Qf8
- 2.Se6#
- 1...Qh8
- 2.Se6#
- 1...Qe6
- Tries
- 1.Sg4?
- threat
- 2.Rf1#
- 2.Re2#
- 2.Rg2#
- 2.Rh2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qg5+
- 2.Rf4#
- 1...Bf4+
- 2.Rxf4#
- 1...Kc5
- 2.Rf5#
- 1...Qxg4
- 2.Rg2#
- 2.Rf4#
- 1...Rxg4
- 2.Rg2#
- 2.Rf4#
- 1...Qf7
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rxf7#
- 1...Qf8
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rf6#
- 2.Rf7#
- 2.Rxf8#
- 1...Rh1
- 2.Rf4#
- 1...Rh2
- 2.Rg2#
- 2.Rxh2#
- 1...Rh3
- 2.Rf3#
- 2.Rf4#
- 1...Bh2
- 2.Rxh2#
- 2.Rf4#
- 1...Bg3
- 2.Rf4#
- 1...Bf6
- 2.Rf1#
- 2.Re2#
- 2.Rg2#
- 2.Rh2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rxf6#
- 1...Qa2+!
- threat
- 1.Qc1?
- threat
- 2.Sf5#
- 2.Qc3#
- 1...Qc4
- 2.Qxc4#
- 1...Bh2
- 2.Qc3#
- 1...Bg3
- 2.Qc3#
- 1...Bf4
- 2.Qc3#
- 1...Bf6
- 2.Qc3#
- 1...Bg7
- 2.Qc3#
- 1...Bh8
- 2.Qc3#
- 1...Qb3
- 2.Sf5#
- 1...Qe6
- 2.Sxe6#
- 2.Qc3#
- 1...Qf7
- 2.Qc3#
- 1...Qh7
- 2.Se6#
- 2.Qc3#
- 2.Qc4#
- 1...Qg4
- 2.Qc3#
- 2.Qc4#
- 1...Qg5
- 2.Se6#
- 2.Qc3#
- 2.Qc4#
- 1...Qg6
- 2.Qc3#
- 2.Qc4#
- 1...Qc8
- 2.Qc3#
- 2.Qc4#
- 1...Qf8
- 2.Se6#
- 2.Qc3#
- 2.Qc4#
- 1...Rf4
- 2.Qc3#
- 1...Rh5
- 2.Qc3#
- 1...Qa2+!
- threat
- 1.Qxg8?
- threat
- 2.Se6#
- 2.Qc4#
- 2.Qd5#
- 1...Bh2
- 2.Qd5#
- 1...Bg3
- 2.Qd5#
- 1...Bf4
- 2.Qd5#
- 1...Bf6
- 2.Qd5#
- 1...Bg7
- 2.Qd5#
- 1...Bh8
- 2.Qd5#
- 1...Rh6
- 2.Qc4#
- 2.Qd5#
- 1...d5
- 2.Se6#
- 2.Qxd5#
- 1...Kc5!
- threat
- 1.Sg4?
- Keys
- 1.Rf5!
- threat
- 2.Sc2#
- 2.Sg2#
- 2.Sg4#
- 1...Qa2+
- 2.Sc2#
- 1...Qg2+
- 2.Sxg2#
- 1...Rh2+
- 2.Sg2#
- 1...Kc5
- 2.Sg4#
- 1...Qxg1
- 2.Se6#
- 1...Qg3
- 2.Sc2#
- 2.Se6#
- 1...Qg4
- 2.Sc2#
- 2.Sg2#
- 2.Sxg4#
- 2.Se6#
- 1...Qg5
- 2.Se6#
- 1...Rh1
- 2.Sc2#
- 1...Rh3
- 2.Sc2#
- 1...Re4
- 2.Sc2#
- 1...Rf4
- 2.Sc2#
- 1...Rg4
- 2.Sc2#
- 2.Sg2#
- 2.Sxg4#
- 1...Bh2
- 2.Sc2#
- 2.Qa1#
- 1...Bg3
- 2.Sc2#
- 2.Qa1#
- 1...Bf4
- 2.Qa1#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 9
- Sets
- Q(e);N_GUARD::S(H),XQ(e)
- Q(e);N_GUARD::S(H)
- Q(e);N_GUARD,XQ(A)::S(H)
- Q(e);N_GUARD,P_PINR(C)::S(H)
- Q(e);N_GUARD,P_PINS(F)::S(H)
- Tries
- Try
- S(F);
- Threat
- DUALS(10)
- Vars
- Q(e);CHECK::QAB(A)+R(C),DCHECK
- B(c);CHECK::QAB(A)+R(C),DCHECK,XB(c)
- K(a);S_FLIGHT::QAB(A)+R(C)
- R(b);::QAB(A)+R(C),DCHECK
- B(c);::QAB(A)+R(C),DCHECK
- Refutation
- Q(e);CHECK
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(e);N_GUARD::QAR1(A),XQ(e)
- B(c);::QAB1(A)
- B(c);P_PINS(F)::QAB1(A)
- Q(e);::S(F)
- Q(e);::QAB1(A)
- R(b);::QAB1(A)
- Refutation
- Q(e);CHECK
- Try
- Q(A);XQ(e)
- Threat
- DUALS(3)
- Vars
- B(c);::QAR1(A)
- B(c);P_PINS(F)::QAR1(A)
- Refutation
- K(a);S_FLIGHT
- Try
- Actual
- R(C);
- Threat
- DUALS(3)
- Vars
- Q(e);CHECK::QAB(A)+S(F),DCHECK
- Q(e);CHECK::QAB(A)+S(F),XQ(e)
- R(b);CHECK::QAB(A)+S(F)
- K(a);P_SPINB(c),S_FLIGHT::QAB(A)+S(F)
- Q(e);N_GUARD,XQ(A)::S(H)
- Q(e);N_GUARD,P_PINS(F)::S(H)
- R(b);::QAB(A)+S(F),DCHECK
- B(c);P_PINS(F)::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).