MESON Chess Problem Database
Problem Display
PID: 198785 (2B3R1/2r4p/1pb1R2p/3nNk1p/4p2P/q7/4N1Q1/2b4K w - - 0 1)
Viganotti, G
4th HM., Centurini Ty. (L'Italia Scacchistica), 1921
#2
8 + 11
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Qh3#
- 1...Qb4
- 2.Qh3#
- 1...Qc5
- 2.Qh3#
- 1...Qd6
- 2.Qh3#
- 1...Qe7
- 2.Qh3#
- 1...Qf8
- 2.Qh3#
- 1...Qa1
- 2.Qh3#
- 1...Qa2
- 2.Qh3#
- 1...Qh3+
- 2.Qxh3#
- 1...Qa4
- 2.Qh3#
- 1...Qa5
- 2.Qh3#
- 1...Qa6
- 2.Qh3#
- 1...Qa7
- 2.Qh3#
- 1...Qa8
- 2.Qh3#
- 1...Be3
- 2.Qh3#
- 1...Bf4
- 2.Sd4#
- 1...Sc3
- 2.Qh3#
- 1...Se3
- 2.Qf2#
- 1...Sf4
- 2.Sd4#
- 1...Se7
- 2.Rf8#
- 1...Qb2
- Tries
- 1.Sg3+?
- 1...Kf4
- 2.Qxe4#
- 1...Qxg3!
- 1...Kf4
- 1.Sd3?
- threat
- 2.Sg3#
- 2.Sd4#
- 2.Qh3#
- 2.Qxe4#
- 1...Rxc8
- 2.Sd4#
- 2.Qh3#
- 2.Qxe4#
- 1...exd3
- 2.Qh3#
- 2.Qe4#
- 1...Rd7
- 2.Sd4#
- 2.Qh3#
- 2.Qxe4#
- 1...Bd7
- 2.Sd4#
- 2.Qh3#
- 2.Qxe4#
- 1...Qb2
- 2.Sg3#
- 2.Qh3#
- 2.Qxe4#
- 1...Qb4
- 2.Sg3#
- 2.Qh3#
- 1...Qc5
- 2.Sg3#
- 2.Qh3#
- 2.Qxe4#
- 1...Qd6
- 2.Sd4#
- 2.Qh3#
- 2.Qxe4#
- 1...Qa1
- 2.Sg3#
- 2.Qh3#
- 2.Qxe4#
- 1...Qc3
- 2.Sg3#
- 2.Qh3#
- 2.Qxe4#
- 1...Qa4
- 2.Sg3#
- 2.Qh3#
- 1...Rg7
- 2.Sd4#
- 2.Qxe4#
- 1...Bb2
- 2.Sg3#
- 2.Qh3#
- 2.Qxe4#
- 1...Be3
- 2.Sg3#
- 2.Qh3#
- 2.Qxe4#
- 1...Bf4
- 2.Sd4#
- 2.Qh3#
- 2.Qxe4#
- 1...Bg5
- 2.Sd4#
- 2.Qh3#
- 2.Qxe4#
- 1...Sc3
- 2.Sg3#
- 2.Sd4#
- 2.Qh3#
- 1...Se3
- 2.Sg3#
- 2.Sd4#
- 2.Qf2#
- 1...Sb4
- 2.Sg3#
- 2.Sd4#
- 2.Qh3#
- 1...Sf4
- 2.Sg3#
- 2.Sd4#
- 1...Sf6
- 2.Sg3#
- 2.Sd4#
- 2.Re5#
- 1...Se7
- 2.Sg3#
- 2.Sd4#
- 2.Rf8#
- 2.Qh3#
- 1...e3
- 2.Sg3#
- 2.Sd4#
- 2.Qh3#
- 2.Qe4#
- 1...Qxd3!
- threat
- 1.Sf3?
- threat
- 2.Sfd4#
- 2.Qh3#
- 1...exf3
- 2.Qh3#
- 1...Qb2
- 2.Qh3#
- 1...Qb4
- 2.Qh3#
- 1...Qc5
- 2.Qh3#
- 1...Qa1
- 2.Qh3#
- 1...Qc3
- 2.Qh3#
- 1...Qd3
- 2.Qh3#
- 1...Qe3
- 2.Qh3#
- 1...Qa4
- 2.Qh3#
- 1...Rg7
- 2.Sfd4#
- 1...Bb2
- 2.Qh3#
- 1...Be3
- 2.Qh3#
- 1...Se3
- 2.Sfd4#
- 1...Sf4
- 2.Sg3#
- 2.Sed4#
- 2.Sfd4#
- 1...Sf6
- 2.Sfd4#
- 2.Re5#
- 1...Qxf3!
- threat
- 1.Sg4?
- threat
- 2.Re5#
- 2.Rf6#
- 2.Qxe4#
- 1...Rxc8
- 2.Re5#
- 2.Qxe4#
- 1...hxg4
- 2.Qxe4#
- 2.Qxg4#
- 1...Rd7
- 2.Re5#
- 2.Qxe4#
- 1...Bd7
- 2.Re5#
- 2.Qxe4#
- 1...Qb4
- 2.Re5#
- 2.Rf6#
- 1...Qd3
- 2.Re5#
- 2.Rf6#
- 1...Qe3
- 2.Re5#
- 2.Rf6#
- 1...Qf3
- 2.Re5#
- 2.Rf6#
- 1...Qa4
- 2.Re5#
- 2.Rf6#
- 1...Rg7
- 2.Rf6#
- 2.Qxe4#
- 1...Sc3
- 2.Re5#
- 2.Rf6#
- 1...Se3
- 2.Sxh6#
- 2.Re5#
- 2.Rf6#
- 2.Qf2#
- 1...Sb4
- 2.Re5#
- 2.Rf6#
- 1...Sf4
- 2.Sd4#
- 2.Sxh6#
- 2.Re5#
- 2.Rf6#
- 1...Sf6
- 2.Re5#
- 2.Rxf6#
- 1...Se7
- 2.Re5#
- 2.Rf6#
- 2.Rf8#
- 1...e3
- 2.Sxh6#
- 2.Re5#
- 2.Rf6#
- 2.Qe4#
- 1...Qh3+!
- threat
- 1.Sd7?
- threat
- 2.Re5#
- 2.Qxe4#
- 1...Qh3+
- 2.Qxh3#
- 1...Rxd7
- 2.Qxe4#
- 1...Bxd7
- 2.Qxe4#
- 1...Qd3
- 2.Re5#
- 1...Qb2
- 2.Qh3#
- 2.Qxe4#
- 1...Qb4
- 2.Re5#
- 2.Qh3#
- 1...Qd6
- 2.Qh3#
- 2.Qxe4#
- 1...Qe7
- 2.Qh3#
- 2.Qxe4#
- 1...Qa1
- 2.Qh3#
- 2.Qxe4#
- 1...Qc3
- 2.Qxe4#
- 1...Qe3
- 2.Re5#
- 1...Qf3
- 2.Re5#
- 1...Qg3
- 2.Qxe4#
- 1...Qa4
- 2.Re5#
- 2.Qh3#
- 1...Bb2
- 2.Qxe4#
- 1...Bf4
- 2.Sd4#
- 2.Qxe4#
- 1...Sc3
- 2.Re5#
- 2.Rf6#
- 2.Qh3#
- 1...Se3
- 2.Re5#
- 2.Rf6#
- 1...Sb4
- 2.Re5#
- 2.Rf6#
- 1...Sf4
- 2.Sd4#
- 2.Re5#
- 2.Rf6#
- 1...Sf6
- 2.Re5#
- 2.Rxf6#
- 1...Se7
- 2.Re5#
- 2.Rf6#
- 1...e3
- 2.Re5#
- 2.Qh3#
- 2.Qe4#
- 1...Kxe6!
- threat
- 1.Sf7?
- threat
- 2.Qxe4#
- 1...Qh3+
- 2.Qxh3#
- 1...Qd3
- 2.Sd6#
- 1...Qb4
- 2.Qh3#
- 1...Qe3
- 2.Sd6#
- 1...Qf3
- 2.Sd6#
- 1...Qa4
- 2.Sd6#
- 2.Qh3#
- 1...Sc3
- 2.Qh3#
- 1...Se3
- 2.Sxh6#
- 2.Qf2#
- 1...Sb4
- 2.Sd6#
- 1...Sf4
- 2.Sd4#
- 2.Sxh6#
- 1...Sf6
- 2.Re5#
- 1...e3
- 2.Sxh6#
- 2.Qh3#
- 2.Qe4#
- 1...Se7!
- threat
- 1.Rf8+?
- 1...Qxf8
- 2.Qh3#
- 1...Sf6
- 2.Rfxf6#
- 1...Rf7!
- 1...Qxf8
- 1.Qf1+?
- 1...Bf4
- 2.Sd4#
- 1...Sf4
- 2.Sd4#
- 1...Qf3+!
- 1...Bf4
- 1.Qf2+?
- 1...Bf4
- 2.Sd4#
- 1...Sf4
- 2.Sd4#
- 1...Qf3+!
- 1...Bf4
- 1.Sg3+?
- Keys
- 1.Sc4!
- threat
- 2.Qxe4#
- 1...Qh3+
- 2.Qxh3#
- 1...Qd3
- 2.Sd6#
- 1...Qe3
- 2.Sd6#
- 1...Qf3
- 2.Sd6#
- 1...Sc3
- 2.Qh3#
- 1...Se3
- 2.Qf2#
- 1...Sb4
- 2.Sd6#
- 1...Sf4
- 2.Sd4#
- 1...Sf6
- 2.Re5#
- 1...Se7
- 2.Rf8#
- 1...e3
- 2.Qh3#
- 2.Qe4#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 15
- Sets
- Q(b);N_GUARD::QAB(C)
- Q(b);CHECK,N_GUARD::QAB(C),XQ(b)
- B(a);S_CUTQ(b)::QAB(C)
- B(a);SBLOCK::S(B)
- S(d);S_CUTQ(b)::QAB(C)
- S(d);N_GUARD,S_CUTB(a),S_CUTQ(b)::QAR(C)
- S(d);SBLOCK::S(B)
- S(d);N_GUARD,S_CUTQ(b),S_CUTR(j)::R(H)
- Tries
- Try
- S(B);CHECK
- Vars
- K(e);P-FLIGHT::QAR1(C),XP(c)
- Refutation
- Q(b);XS(B)
- Try
- S(E);
- Threat
- DUALS(4)
- Refutation
- Q(b);XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(c);XS(E)::QAB(C)
- Q(b);::QAB(C)
- R(j);::S(E)
- B(a);::QAB(C)
- S(d);::S(E)
- Refutation
- Q(b);P_PINQ(C),XS(E)
- Try
- S(E);
- Threat
- DUALS(3)
- Refutation
- Q(b);CHECK
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_GUARD::QAB(C),XQ(b)
- R(j);XS(E)::QAB1(C),XP(c)
- B(h);XS(E)::QAB1(C),XP(c)
- Q(b);::R1(F)
- Q(b);::QAB1(C),XP(c)
- Q(b);P_PINQ(C)::R1(F)
- B(a);::QAB1(C),XP(c)
- Refutation
- K(e);S_FLIGHT,XR(F)
- Try
- S(E);
- Threat
- QAB1(C),XP(c)
- Vars
- Q(b);CHECK,N_GUARD::QAB(C),XQ(b)
- Q(b);N_GUARD::S(E)
- Q(b);N_GUARD::QAB(C)
- Q(b);N_GUARD,P_PINQ(C)::S(E)
- S(d);S_CUTQ(b)::QAB(C)
- S(d);S_CUTQ(b)::S(E)
- S(d);SBLOCK::B(G)+R(F),DCHECK
- Refutation
- S(d);
- Try
- R(H);CHECK
- Vars
- Q(b);XR(H)::QAB(C)
- S(d);N_GUARD,P_SPINS(d)::R1(H),XS(d)
- Refutation
- R(j);P_SPINR(j)
- Try
- Q(C);CHECK
- Vars
- B(a);P_SPINB(a)::S(B)
- S(d);P_SPINS(d)::S(B)
- Refutation
- Q(b);CHECK,P_SPINQ(b)
- Try
- Q(C);CHECK
- Vars
- B(a);P_SPINB(a)::S(B)
- S(d);P_SPINS(d)::S(B)
- Refutation
- Q(b);CHECK,P_SPINQ(b)
- Try
- Actual
- S(E);
- Threat
- QAB1(C),XP(c)
- Vars
- Q(b);CHECK,N_GUARD::QAB(C),XQ(b)
- Q(b);N_GUARD::S(E)
- Q(b);N_GUARD,P_PINQ(C)::S(E)
- S(d);S_CUTQ(b)::QAB(C)
- S(d);N_GUARD,S_CUTB(a),S_CUTQ(b)::QAR(C)
- S(d);S_CUTQ(b)::S(E)
- S(d);SBLOCK::S(B)
- S(d);SBLOCK::B(G)+R(F),DCHECK
- S(d);N_GUARD,S_CUTQ(b),S_CUTR(j)::R(H)
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).