MESON Chess Problem Database
Problem Display
PID: 2940 (8/5p1B/1P3Q2/4p1P1/1B1b2K1/2ppkp2/1N1nbR1R/1N6 w - - 0 1)
Sardotsch, Giusto
1st Prize, L'Italia Scacchistica, 1912
#2
10 + 9
| 2638 | White to Play | 1913 |
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Sxd1#
- 1...Bf1
- 2.Sd1#
- 1...Bc5
- 2.Bxc5#
- 1...Bxb6
- 2.Qxb6#
- 1...Sxb1
- 2.Sc4#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...c2
- 2.Bxd2#
- 1...e4
- 2.Qf4#
- 1...Bd1
- Tries
- 1.Kf5?
- 1...Bxb6
- 2.Qxb6#
- 1...Sxb1
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...Bc5
- 2.Bxc5#
- 1...Bd1
- 2.Sxd1#
- 1...Bf1
- 2.Sd1#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...c2
- 2.Bxd2#
- 1...e4!
- 1...Bxb6
- 1.Sxc3?
- threat
- 2.Sd5#
- 1...Bxb6
- 2.Qxb6#
- 1...Bc5
- 2.Bxc5#
- 1...Bxc3!
- threat
- 1.Ba5?
- 1...Bxb6
- 2.Bxb6#
- 2.Qxb6#
- 1...Sxb1
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...e4
- 2.Qf4#
- 1...Bd1
- 2.Sxd1#
- 1...Bf1
- 2.Sd1#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...c2
- 2.Bxd2#
- 1...Bc5!
- 1...Bxb6
- 1.Bf5?
- 1...Bxb6
- 2.Qxb6#
- 1...Sxb1
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...Bc5
- 2.Bxc5#
- 1...c2
- 2.Bxd2#
- 1...Bd1
- 2.Sxd1#
- 1...Bf1
- 2.Sd1#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...e4!
- 1...Bxb6
- 1.Bg6?
- 1...Bxb6
- 2.Qxb6#
- 1...Sxb1
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...Bc5
- 2.Bxc5#
- 1...e4
- 2.Qf4#
- 1...Bd1
- 2.Sxd1#
- 1...Bf1
- 2.Sd1#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...c2
- 2.Bxd2#
- 1...fxg6!
- 1...Bxb6
- 1.Rf1?
- 1...Bxf1
- 2.Sd1#
- 1...Bxb6
- 2.Qxb6#
- 1...Sxb1
- 2.Sc4#
- 1...Sxf1
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...Bc5
- 2.Bxc5#
- 1...e4
- 2.Qf4#
- 1...Bd1
- 2.Sxd1#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...c2
- 2.Bxd2#
- 1...f2+!
- 1...Bxf1
- 1.Rxe2+?
- 1...fxe2
- 2.Qf2#
- 1...dxe2!
- 1...fxe2
- 1.Rxf3+?
- 1...Sxf3
- 2.Sc4#
- 1...Bxf3+!
- 1...Sxf3
- 1.Rhg2?
- 1...Bxb6
- 2.Qxb6#
- 1...Sxb1
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...Bc5
- 2.Bxc5#
- 1...e4
- 2.Qf4#
- 1...Bd1
- 2.Sxd1#
- 1...Bf1
- 2.Sd1#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...c2
- 2.Bxd2#
- 1...fxg2+!
- 1...Bxb6
- 1.Qxe5+?
- 1...Se4
- 2.Sc4#
- 2.Qf4#
- 2.Qxe4#
- 1...Bxe5!
- 1...Se4
- 1.Qxf3+?
- 1...Sxf3
- 2.Sc4#
- 1...Bxf3+!
- 1...Sxf3
- 1.Qxf7?
- 1...Sxb1
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...Bc5
- 2.Bxc5#
- 1...e4
- 2.Qf4#
- 1...Bd1
- 2.Sxd1#
- 1...Bf1
- 2.Sd1#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...c2
- 2.Bxd2#
- 1...Bxb6!
- 1...Sxb1
- 1.b7?
- 1...Sxb1
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...Bc5
- 2.Bxc5#
- 1...Bb6
- 2.Qxb6#
- 1...e4
- 2.Qf4#
- 1...Bd1
- 2.Sxd1#
- 1...Bf1
- 2.Sd1#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...c2
- 2.Bxd2#
- 1...Ba7!
- 1...Sxb1
- 1.Kf5?
- Keys
- 1.Qh6!
- 1...f5+
- 2.gxf5 ep#
- 1...Bxb6
- 2.Qxb6#
- 1...Sxb1
- 2.Sc4#
- 1...cxb2
- 2.Bxd2#
- 1...Bc5
- 2.Bxc5#
- 1...e4
- 2.g6#
- 1...Bd1
- 2.Sxd1#
- 1...Bf1
- 2.Sd1#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...c2
- 2.Bxd2#
- 1...f6
- 2.gxf6#
- 1...f5+
- 1.Qh6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::S(B)
- B(g);OGATEB::B(E),XB(g)
- B(g);OGATE,XP(H)::QAB(I),XB(g)
- S(a);N_GUARD,XS(A)::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATE,XS(B)::B(E),XS(a)
- P(c);OGATE::B(E),XS(a)
- P(h);N_GUARD::QAB1(I)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- B(g);OGATE,XP(H)::QAB(I),XB(g)
- S(a);N_GUARD,XS(A)::S(B)
- P(c);OGATE,XS(B)::B(E),XS(a)
- B(g);OGATEB::B(E),XB(g)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATE::B(E),XS(a)
- Refutation
- P(h);
- Try
- S(A);XP(c)
- Threat
- S(A)
- Vars
- B(g);OGATE,XP(H)::QAB(I),XB(g)
- B(g);OGATEB::B(E),XB(g)
- Refutation
- B(g);XS(A)
- Try
- B(E);
- Vars
- S(a);N_GUARD,XS(A)::S(B)
- P(c);OGATE,XS(B)::B(E),XS(a)
- P(h);N_GUARD::QAB1(I)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATE::B(E),XS(a)
- Refutation
- B(g);
- Try
- B(J);
- Vars
- B(g);OGATE,XP(H)::QAB(I),XB(g)
- S(a);N_GUARD,XS(A)::S(B)
- P(c);OGATE,XS(B)::B(E),XS(a)
- B(g);OGATEB::B(E),XB(g)
- P(c);OGATE::B(E),XS(a)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- P(h);
- Try
- B(J);
- Vars
- B(g);OGATE,XP(H)::QAB(I),XB(g)
- S(a);N_GUARD,XS(A)::S(B)
- P(c);OGATE,XS(B)::B(E),XS(a)
- B(g);OGATEB::B(E),XB(g)
- P(h);N_GUARD::QAB1(I)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATE::B(E),XS(a)
- Refutation
- P(i);XB(J)
- Try
- R(C);
- Vars
- B(b);N_GUARD,XR(C)::S(B)
- B(g);OGATE,XP(H)::QAB(I),XB(g)
- S(a);N_GUARD,XS(A)::S(B)
- S(a);N_GUARD,XR(C)::S(B)
- P(c);OGATE,XS(B)::B(E),XS(a)
- B(g);OGATEB::B(E),XB(g)
- P(h);N_GUARD::QAB1(I)
- B(b);N_GUARD::S(B),XB(b)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATE::B(E),XS(a)
- Refutation
- P(f);CHECK
- Try
- R(C);CHECK,XB(b)
- Vars
- P(f);OGATE,XR(C)::QAB1(I)
- Refutation
- P(d);XR(C)
- Try
- R(C);CHECK,P_SPINR(C),XP(f)
- Vars
- S(a);XR(C)::S(B)
- Refutation
- B(b);CHECK,XR(C)
- Try
- R(D);
- Vars
- B(g);OGATE,XP(H)::QAB(I),XB(g)
- S(a);N_GUARD,XS(A)::S(B)
- P(c);OGATE,XS(B)::B(E),XS(a)
- B(g);OGATEB::B(E),XB(g)
- P(h);N_GUARD::QAB1(I)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATE::B(E),XS(a)
- Refutation
- P(f);CHECK,XR(D)
- Try
- Q(I);CHECK,XP(h)
- Refutation
- B(g);XQ(I)
- Try
- Q(I);CHECK,P_SPINQ(I),XP(f)
- Vars
- S(a);XQ(I)::S(B)
- Refutation
- B(b);CHECK,XQ(I)
- Try
- Q(I);XP(i)
- Vars
- S(a);N_GUARD,XS(A)::S(B)
- P(c);OGATE,XS(B)::B(E),XS(a)
- B(g);OGATEB::B(E),XB(g)
- P(h);N_GUARD::QAB1(I)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATE::B(E),XS(a)
- Refutation
- B(g);XP(H)
- Try
- P(H);
- Vars
- S(a);N_GUARD,XS(A)::S(B)
- P(c);OGATE,XS(B)::B(E),XS(a)
- B(g);OGATEB::B(E),XB(g)
- B(g);OGATEB::QAB(I),XB(g)
- P(h);N_GUARD::QAB1(I)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATE::B(E),XS(a)
- Refutation
- B(g);
- Try
- Actual
- Q(I);
- Vars
- P(i);CHECK,OGATE::QAB(I)+P(G),XP(i),EP
- B(g);OGATE,XP(H)::QAB(I),XB(g)
- S(a);N_GUARD,XS(A)::S(B)
- P(c);OGATE,XS(B)::B(E),XS(a)
- B(g);OGATEB::B(E),XB(g)
- P(h);SBLOCK::QAB(I)+P(G)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(c);OGATE::B(E),XS(a)
- P(i);OGATE::QAB(I)+P(G),XP(i)
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).