MESON Chess Problem Database
Problem Display
PID: 98649 (2bNRRK1/8/3BB3/4bp2/Qp3k1P/1n1q1pNP/5P2/8 w - - 0 1)
Rizzetti, Dante Hugo
Problemas, 1980
#2
11 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Rxf5#
- 1...Qe2
- 2.Rxf5#
- 1...Qc4
- 2.Rxf5#
- 1...Qe4
- 2.Sh5#
- 1...Qb5
- 2.Rxf5#
- 1...Qa6
- 2.Rxf5#
- 1...Qd1
- 2.Rxf5#
- 1...Qd2
- 2.Rxf5#
- 1...Qc3
- 2.Rxf5#
- 1...Qe3
- 2.Rxf5#
- 1...Qd4
- 2.Rxf5#
- 1...Qd5
- 2.Rxf5#
- 1...Qxd6
- 2.Rxf5#
- 1...Bxe6+
- 2.Sxe6#
- 1...Qf1
- Tries
- 1.Bxb4?
- threat
- 2.Bd2#
- 1...Bxe6+
- 2.Sxe6#
- 1...Ba1
- 2.Bd6#
- 1...Bb2
- 2.Bd6#
- 1...Bc3
- 2.Bd6#
- 1...Bd4
- 2.Bd6#
- 1...Bd6
- 2.Bxd6#
- 1...Bf6
- 2.Bd6#
- 1...Bc7
- 2.Bd6#
- 1...Bg7
- 2.Bd6#
- 1...Bb8
- 2.Bd6#
- 1...Bh8
- 2.Bd6#
- 1...Qc4
- 2.Rxf5#
- 1...Qe4
- 2.Sh5#
- 1...Qd2
- 2.Bxd2#
- 2.Rxf5#
- 1...Qc3
- 2.Rxf5#
- 1...Qe3
- 2.Rxf5#
- 1...Qd4
- 2.Rxf5#
- 1...Sd2
- 2.Bxd2#
- 1...Sd4!
- threat
- 1.Bd5?
- threat
- 2.Sh5#
- 2.Bxe5#
- 1...Be6+
- 2.Sxe6#
- 1...Bxd6
- 2.Sh5#
- 1...Qe2
- 2.Sh5#
- 1...Qe4
- 2.Sh5#
- 1...Qc3
- 2.Sh5#
- 1...Qe3
- 2.Sh5#
- 1...Qd4
- 2.Sh5#
- 1...Qxd5+!
- threat
- 1.Qc6?
- threat
- 2.Sh5#
- 1...Bxe6+
- 2.Sxe6#
- 1...Qd5
- 2.Rxf5#
- 1...Bxd6!
- threat
- 1.Qxb4+?
- 1...Qc4
- 2.Rxf5#
- 1...Qe4
- 2.Sh5#
- 2.Rxf5#
- 2.Qxe4#
- 1...Qd4
- 2.Rxf5#
- 1...Sd4!
- 1...Qc4
- 1.Bxb4?
- Keys
- 1.Bxf5!
- threat
- 2.Sh5#
- 2.Bxe5#
- 1...Qc4+
- 2.Be6#
- 1...Qd5+
- 2.Be6#
- 1...Be6+
- 2.Sxe6#
- 1...Qxf5
- 2.Bxe5#
- 1...Qxd6
- 2.Sh5#
- 1...Bxd6
- 2.Sh5#
- 1...Bxf5
- 2.Se6#
- 2.Bxe5#
- 1...Qe2
- 2.Sh5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 1...Qe4
- 2.Sh5#
- 1...Qb5
- 2.Sh5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 1...Qc3
- 2.Sh5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 1...Qe3
- 2.Sh5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- 1...Qd4
- 2.Sh5#
- 2.Be6#
- 2.Bd7#
- 2.Bxc8#
- threat
- 1.Bxf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(b);N_GUARD::R1(J),XP(g)
- Q(b);N_GUARD,N_SPINP(d),P_PINB(G),P_SPINP(g)::R1(J),XP(g)
- Q(b);N_SPINP(d),P_SPINP(g),SBLOCK::S(B)
- Q(b);N_GUARD,N_SPINP(d),P_SPINP(g)::R1(J),XP(g)
- Q(b);N_GUARD,P_PINB(G)::R1(J),XP(g)
- Q(b);N_GUARD,N_SPINB(f),XB(F)::R1(J),XP(g)
- B(h);CHECK,XB(G)::S(H),XB(h)
- Tries
- Try
- B(F);N_PINB(f),P_PINP(g),XP(d)
- Threat
- QAR(D)+B(F),DCHECK
- Vars
- B(h);CHECK,XB(G)::S(H),XB(h)
- B(f);::QAR(D)+B(F),DCHECK
- B(f);S_CUTQ(b),S_CUTQ(b),S_CUTQ(b),S_CUTS(a)::B(F)
- B(f);::QAR(D)+B(F),DCHECK,XB(f)
- B(f);N_SPINP(g)::QAR(D)+B(F),DCHECK
- Q(b);N_GUARD,P_PINB(G)::R1(J),XP(g)
- Q(b);SBLOCK::S(B)
- Q(b);N_GUARD::R1(J),XP(g)
- S(a);::QAR(D)+B(F),DCHECK,XS(a)
- Refutation
- S(a);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- B(h);CHECK,N_GUARD::S(H),XB(h)
- B(f);N_SPINB(f),XB(F)::S(B)
- Q(b);::S(B)
- Q(b);N_SPINP(d),P_SPINP(g)::S(B)
- Refutation
- Q(b);CHECK,XB(G)
- Try
- Q(D);N_PINP(d),P_PINP(g)
- Threat
- S(B)
- Vars
- B(h);CHECK,XB(G)::S(H),XB(h)
- Q(b);N_GUARD,P_PINB(G)::R1(J),XP(g)
- Refutation
- B(f);N_SPINB(f),XB(F)
- Try
- Q(D);CHECK,P_PINP(g),XP(d)
- Vars
- Q(b);P_PINB(G),P_SPINQ(b)::R1(J),XP(g)
- Q(b);P_SPINQ(b)::R1(J),XP(g)
- Refutation
- S(a);P_SPINS(a)
- Try
- Actual
- B(G);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_GUARD,N_SPINP(d)::R(J)+B(G)
- Q(b);CHECK,N_GUARD::R(J)+B(G)
- B(h);CHECK,N_GUARD::S(H),XB(h)
- Q(b);P_SPINQ(b),XB(G)::B(F),XB(f)
- Q(b);N_SPINB(f),XB(F)::S(B)
- B(f);N_SPINB(f),XB(F)::S(B)
- Q(b);N_SPINP(d)::S(B)
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).