MESON Chess Problem Database
Problem Display
PID: 97315 (8/K3b3/1N1P3R/p2NknB1/q7/3Qp2B/4pr2/8 w - - 0 1)
Stocchi, Ottavio
Problemi di Ottavio Stocchi, 1995
#2
8 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sc4#
- 2.Sd7#
- 1...Qc2
- 2.Sd7#
- 1...Qb3
- 2.Sd7#
- 1...Qd7+
- 2.Sxd7#
- 1...Qe8
- 2.Sc4#
- 1...Qa1
- 2.Sc4#
- 2.Sd7#
- 1...Qa2
- 2.Sd7#
- 1...Qa3
- 2.Sc4#
- 2.Sd7#
- 1...Qb4
- 2.Sd7#
- 1...Qc4
- 2.Sxc4#
- 2.Sd7#
- 1...Qe4
- 2.Sd7#
- 1...Qf4
- 2.Sd7#
- 1...Qg4
- 2.Sd7#
- 1...Qh4
- 2.Sd7#
- 1...Sg3
- 2.Re6#
- 1...Sd4
- 2.Qxe3#
- 1...Sh4
- 2.Re6#
- 1...Sxd6
- 2.Re6#
- 1...Qd1
- Tries
- 1.Sf4?
- threat
- 2.Re6#
- 2.Qd5#
- 1...Qd7+
- 2.Sxd7#
- 1...Qxf4
- 2.Sd7#
- 2.Qd5#
- 1...Rxf4
- 2.Qd5#
- 1...Sxh6
- 2.Sg6#
- 2.Qd5#
- 1...Qd1
- 2.Sc4#
- 2.Sd7#
- 2.Re6#
- 1...Qb3
- 2.Sd7#
- 1...Qb5
- 2.Re6#
- 1...Qc6
- 2.Re6#
- 1...Qa2
- 2.Sd7#
- 1...Qc4
- 2.Sxc4#
- 2.Sd7#
- 1...Qd4
- 2.Re6#
- 2.Qxf5#
- 1...Qe4
- 2.Sd7#
- 2.Re6#
- 1...Bf6
- 2.Qd5#
- 1...Sd4
- 2.Qxe3#
- 1...Sg7
- 2.Sg6#
- 2.Qd5#
- 1...Bxg5!
- threat
- 1.Sc7?
- threat
- 2.Re6#
- 2.Qd5#
- 1...Sxh6
- 2.Qd5#
- 1...Qd1
- 2.Sc4#
- 2.Sd7#
- 2.Re6#
- 1...Qb3
- 2.Sd7#
- 1...Qb5
- 2.Re6#
- 1...Qc6
- 2.Re6#
- 1...Qd7
- 2.Sc4#
- 2.Sxd7#
- 2.Qd5#
- 1...Qa2
- 2.Sd7#
- 1...Qc4
- 2.Sxc4#
- 2.Sd7#
- 1...Qd4
- 2.Re6#
- 1...Qe4
- 2.Sd7#
- 2.Re6#
- 1...Bf6
- 2.Qd5#
- 1...Sd4
- 2.Qxe3#
- 1...Sg7
- 2.Qd5#
- 1...Bxg5!
- threat
- 1.Sxe7?
- threat
- 2.Qd5#
- 1...Qd7+
- 2.Sxd7#
- 1...Sxe7
- 2.Re6#
- 1...Qd1
- 2.Sc4#
- 2.Sd7#
- 2.Sc6#
- 1...Qb3
- 2.Sd7#
- 2.Sc6#
- 1...Qc6
- 2.Sxc6#
- 1...Qa2
- 2.Sd7#
- 2.Sc6#
- 1...Qc4
- 2.Sxc4#
- 2.Sd7#
- 1...Qd4
- 2.Sc6#
- 1...Qe4
- 2.Sd7#
- 1...Sd4
- 2.Qxe3#
- 1...Qb5!
- threat
- 1.Bf4+?
- 1...Qxf4
- 2.Sd7#
- 1...Rxf4!
- 1...Qxf4
- 1.Qxf5+?
- 1...Kd4
- 2.Bxe3#
- 1...Rxf5!
- 1...Kd4
- 1.Sf4?
- Keys
- 1.Sf6!
- threat
- 2.Qd5#
- 1...Qd7+
- 2.Sfxd7#
- 1...Ke6
- 2.Qd5#
- 1...Qd4
- 2.Sd7#
- 1...Qd1
- 2.Sg4#
- 2.Sfd7#
- 1...Qb3
- 2.Sg4#
- 2.Sfd7#
- 1...Qb5
- 2.Sg4#
- 1...Qc6
- 2.Sg4#
- 1...Qa2
- 2.Sg4#
- 2.Sfd7#
- 1...Qc4
- 2.Sfd7#
- 1...Qe4
- 2.Sfd7#
- 1...Sd4
- 2.Sg4#
- threat
- 1.Sf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 11
- Sets
- Q(d);N_GUARD::S(E)
- Q(d);CHECK,N_GUARD::S(E),XQ(d)
- S(g);::R1(G)
- S(g);N_GUARD,S_CUTQ(d)::QAR2(A),XP(c)
- S(g);XP(F)::R1(G)
- Tries
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,N_GUARD::S(E),XQ(d)
- R(b);XS(C)::QAR1(A)
- Q(d);N_GUARD::S(E)
- Q(d);::R1(G)
- B(h);::QAR1(A)
- S(g);N_GUARD,S_CUTQ(d)::QAR2(A),XP(c)
- Refutation
- B(h);XB(D)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- S(g);XR(G)::QAR1(A)
- Q(d);N_GUARD::S(E)
- Q(d);::R1(G)
- Q(d);P_PINS(E)::R1(G)
- B(h);::QAR1(A)
- S(g);N_GUARD,S_CUTQ(d)::QAR2(A),XP(c)
- S(g);::QAR1(A)
- Refutation
- B(h);XB(D)
- Try
- S(C);XB(h)
- Threat
- QAR1(A)
- Vars
- Q(d);CHECK,N_GUARD::S(E),XQ(d)
- S(g);XS(C)::R1(G)
- Q(d);N_GUARD::S(C),XQ(d)
- Q(d);N_GUARD,P_PINS(E)::S(C)
- Q(d);N_GUARD::S(E)
- S(g);N_GUARD,S_CUTQ(d)::QAR2(A),XP(c)
- Refutation
- Q(d);
- Try
- B(D);CHECK
- Vars
- Q(d);XB(D)::S(E)
- Refutation
- R(b);XB(D)
- Try
- Q(A);CHECK,XS(g)
- Vars
- K(f);S_FLIGHT::B(D),XP(c)
- Refutation
- R(b);XQ(A)
- Try
- Actual
- S(C);
- Threat
- QAR1(A)
- Vars
- Q(d);CHECK,N_GUARD::S(C),XQ(d)
- K(f);P-FLIGHT,P_SPINS(g)::QAB1(A)
- Q(d);N_GUARD,P_PINS(E)::S(C)
- Q(d);N_GUARD::S(C)
- S(g);S_CUTQ(d)::S(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).