MESON Chess Problem Database
Problem Display
PID: 201948 (nrkb3q/1p1RP1p1/2r5/2RnNB1p/b7/8/7K/8 w - - 0 1)
Ammer, Erik
04. YCCC, 2019
#2
6 + 11
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qh6
- 2.exd8Q#
- 2.exd8R#
- 1...Qh7
- 2.exd8Q#
- 2.exd8R#
- 1...Rc7
- 2.Rdxc7#
- 2.Rxd8#
- 1...Bc7
- 2.Rd6#
- 2.Rd8#
- 1...Sdc7
- 2.Rxd8#
- 1...Sxe7
- 2.Rxe7#
- 1...Sac7
- 2.Rxd8#
- 1...b5
- 2.Ra7#
- 1...b6
- 2.Ra7#
- 1...Qh6
- Tries
- 1.Sc4?
- threat
- 2.Sd6#
- 1...Bc7+
- 2.Rd6#
- 1...Qh6
- 2.exd8Q#
- 2.exd8R#
- 1...Sdc7
- 2.Rxd8#
- 1...Sac7
- 2.Rxd8#
- 1...Bxe7!
- threat
- 1.Sxc6?
- threat
- 2.Sa7#
- 1...Bc7+
- 2.Rd6#
- 1...bxc6
- 2.Ra7#
- 1...Bxc6!
- threat
- 1.Rxc6+?
- 1...Bc7
- 2.Rxd5#
- 2.Rdd6#
- 2.Rdxc7#
- 2.Rd8#
- 1...Sdc7
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rdd6#
- 2.Rdxc7#
- 2.Rxd8#
- 1...Sac7
- 2.Rxd5#
- 2.Rdd6#
- 2.Rdxc7#
- 2.Rxd8#
- 1...bxc6
- 2.Ra7#
- 1...Bxc6!
- 1...Bc7
- 1.e8S?
- threat
- 2.Sd6#
- 2.Rdxd5#
- 2.Rd6#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rxg7#
- 1...Rxc5
- 2.Sd6#
- 2.Rc7#
- 1...Qh6
- 2.Rc7#
- 1...Qh7
- 2.Sd6#
- 2.Rc7#
- 1...Qf8
- 2.Rc7#
- 2.Rf7#
- 1...Qg8
- 2.Sd6#
- 2.Rc7#
- 2.Rf7#
- 1...Rc7
- 2.Sd6#
- 2.Rdxc7#
- 1...Bc2
- 2.Sd6#
- 2.Rc7#
- 1...Bh4
- 2.Sd6#
- 2.Rdxd5#
- 2.Rd6#
- 1...Ba5
- 2.Sd6#
- 2.Rdxd5#
- 2.Rd6#
- 1...Bg5
- 2.Sd6#
- 2.Rdxd5#
- 2.Rd6#
- 1...Bb6
- 2.Sd6#
- 2.Rdxd5#
- 2.Rd6#
- 1...Bf6
- 2.Sd6#
- 2.Rdxd5#
- 2.Rd6#
- 1...Bc7
- 2.Rd6#
- 1...Be7
- 2.Rdxd5#
- 2.Rd6#
- 1...Sc3
- 2.Sd6#
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rdd5#
- 2.Rd6#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rxg7#
- 1...Se3
- 2.Sd6#
- 2.Rc7#
- 1...Sb4
- 2.Sd6#
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rdd5#
- 2.Rd6#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rxg7#
- 1...Sf4
- 2.Sd6#
- 2.Rc7#
- 1...Sdb6
- 2.Sd6#
- 2.Rc7#
- 1...Sf6
- 2.Sd6#
- 2.Rc7#
- 1...Sdc7
- 2.Rxc7#
- 1...Se7
- 2.Sd6#
- 2.Rc7#
- 2.Rxe7#
- 1...Sab6
- 2.Sd6#
- 2.Rc7#
- 1...Sac7
- 2.Rxc7#
- 1...b5
- 2.Sd6#
- 2.Ra7#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rxg7#
- 1...b6
- 2.Sd6#
- 2.Ra7#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rxg7#
- 1...g5
- 2.Sd6#
- 2.Rdxd5#
- 2.Rd6#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rh7#
- 1...g6
- 2.Sd6#
- 2.Rc7#
- 1...Qxe8!
- threat
- 1.Sc4?
- Keys
- 1.Sf7!
- threat
- 2.Sd6#
- 1...Bc7+
- 2.Rd6#
- 1...Bxe7
- 2.Rxe7#
- 1...Qh6
- 2.exd8Q#
- 2.exd8R#
- 1...Sdc7
- 2.Rxd8#
- 1...Sac7
- 2.Rxd8#
- threat
- 1.Sf7!
There are these versions: 205186
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(k);N_GUARD::PXB(j)=Q
- S(b);N_SPINR(d),SBLOCK::B(D)+R(E),DCHECK,XB(j)
- S(b);OGATE,XP(F)::B(D)+R(E),XS(b)
- S(g);N_SPINR(d),SBLOCK::B(D)+R(E),DCHECK,XB(j)
- P(e);OGATE::B(D)+R(E)
- Tries
- Try
- S(C);
- Threat
- S(C)
- Vars
- B(j);CHECK,N_SPINR(d),SBLOCK::B(D)+R(E)
- Q(k);N_GUARD::PXB(j)=Q
- S(b);N_SPINR(d),SBLOCK::B(D)+R(E),DCHECK,XB(j)
- S(g);N_SPINR(d),SBLOCK::B(D)+R(E),DCHECK,XB(j)
- Refutation
- B(j);XP(F)
- Try
- S(C);XR(d)
- Threat
- R(B)+S(C),DCHECK
- Vars
- B(j);CHECK,SBLOCK::B(D)+R(E)
- P(e);OGATE,P_SPINP(e),XS(C)::B(D)+R(E)
- Refutation
- B(a);P_SPINB(a),XS(C)
- Try
- R(B);CHECK,XR(d)
- Vars
- P(e);OGATE,XR(B)::B(D)+R(E)
- Refutation
- B(a);XR(B)
- Try
- P(F);
- Threat
- DUALS(7)
- Vars
- Q(k);::B(D)+R(E),DCHECK
- B(j);N_SPINR(d),P_PINS(C)::B(D)+R(E)
- S(b);N_SPINR(d)::B(D)+R(E),DCHECK,XS(b)
- S(g);N_SPINR(d)::B(D)+R(E),DCHECK,XS(g)
- Refutation
- Q(k);XS(F)
- Try
- Actual
- S(C);
- Threat
- S(C)
- Vars
- B(j);CHECK,N_SPINR(d),SBLOCK::B(D)+R(E)
- B(j);OGATE,XP(F)::B(D)+R(E),XB(j)
- Q(k);N_GUARD::PXB(j)=Q
- S(b);N_SPINR(d),SBLOCK::B(D)+R(E),DCHECK,XB(j)
- S(g);N_SPINR(d),SBLOCK::B(D)+R(E),DCHECK,XB(j)
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).