MESON Chess Problem Database
Problem Display
PID: 261223 (4B2B/3Q3p/6p1/2p3pN/2b1kbp1/R7/4nPK1/1N1R4 w - - 0 1)
Mirri, Giorgio
Neue Zurcher Zeitung, 1981
#2
9 + 9
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bb5
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Ba6
- 2.Qd5#
- 1...Be6
- 2.Qd3#
- 1...Bf7
- 2.Qd3#
- 1...Bg8
- 2.Qd3#
- 1...Bd2
- 2.Sxd2#
- 1...Bh2
- 2.Sd2#
- 2.Re3#
- 1...Be3
- 2.Rxe3#
- 1...Bg3
- 2.Sd2#
- 2.Re3#
- 1...Be5
- 2.Sd2#
- 2.Re3#
- 1...Bd6
- 2.Re3#
- 1...Bc7
- 2.Sd2#
- 2.Re3#
- 1...Bb8
- 2.Sd2#
- 2.Re3#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...g3
- 2.f3#
- 1...gxh5
- 2.Qxh7#
- 1...h6
- 2.Bxg6#
- 1...Ba2
- Tries
- 1.Sg3+?
- 1...Sxg3
- 2.Sc3#
- 1...Bxg3!
- 1...Sxg3
- 1.Bf6?
- 1...gxh5
- 2.Qxh7#
- 1...Be6
- 2.Qd3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bb5
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Ba6
- 2.Qd5#
- 1...Bf7
- 2.Qd3#
- 1...Bg8
- 2.Qd3#
- 1...Bd2
- 2.Sxd2#
- 1...Bh2
- 2.Sd2#
- 2.Re3#
- 1...Be3
- 2.Rxe3#
- 1...Bg3
- 2.Sd2#
- 2.Re3#
- 1...Be5
- 2.Sd2#
- 2.Re3#
- 1...Bd6
- 2.Re3#
- 1...Bc7
- 2.Sd2#
- 2.Re3#
- 1...Bb8
- 2.Sd2#
- 2.Re3#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...g3
- 2.f3#
- 1...h6
- 2.Bxg6#
- 1...Bc1!
- 1...gxh5
- 1.Rb3?
- 1...Bxb3
- 2.Qd3#
- 1...gxh5
- 2.Qxh7#
- 1...Be6
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bb5
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Ba6
- 2.Qd5#
- 1...Bf7
- 2.Qd3#
- 1...Bg8
- 2.Qd3#
- 1...Bd2
- 2.Sxd2#
- 1...Bh2
- 2.Sd2#
- 2.Re3#
- 1...Be3
- 2.Rxe3#
- 1...Bg3
- 2.Sd2#
- 2.Re3#
- 1...Be5
- 2.Sd2#
- 2.Re3#
- 1...Bd6
- 2.Re3#
- 1...Bc7
- 2.Sd2#
- 2.Re3#
- 1...Bb8
- 2.Sd2#
- 2.Re3#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...g3
- 2.f3#
- 1...h6
- 2.Bxg6#
- 1...Bc1!
- 1...Bxb3
- 1.Rg3?
- 1...Bxg3
- 2.Sd2#
- 1...Sxg3
- 2.Sc3#
- 1...gxh5
- 2.Qxh7#
- 1...Be6
- 2.Qd3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bb5
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Ba6
- 2.Qd5#
- 1...Bf7
- 2.Qd3#
- 1...Bg8
- 2.Qd3#
- 1...Bd2
- 2.Sxd2#
- 1...Be3
- 2.Rxe3#
- 1...Be5
- 2.Sd2#
- 2.Re3#
- 1...Bd6
- 2.Re3#
- 1...Bc7
- 2.Sd2#
- 2.Re3#
- 1...Bb8
- 2.Sd2#
- 2.Re3#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sd4
- 2.Sc3#
- 1...h6
- 2.Bxg6#
- 1...Bc1!
- 1...Bxg3
- 1.Ra4?
- threat
- 2.Qd3#
- 2.Qd5#
- 1...Bd2
- 2.Sxd2#
- 1...Be5
- 2.Sd2#
- 2.Qd3#
- 1...Sc1
- 2.Sc3#
- 2.Rxc4#
- 2.Qd5#
- 1...Sc3
- 2.Sxc3#
- 2.Rxc4#
- 2.Qd3#
- 1...Sd4
- 2.Sc3#
- 1...Bd6!
- threat
- 1.Qxg4?
- threat
- 2.Re3#
- 2.f3#
- 1...Bd3
- 2.Bc6#
- 1...Sd4
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 2.Sg3#
- 2.Re3#
- 1...Sc3
- 2.Sxc3#
- 2.Sg3#
- 1...Bb3!
- threat
- 1.Qc6+?
- 1...Bd5
- 2.Qxd5#
- 1...Kf5!
- 1...Bd5
- 1.Qe6+?
- 1...Be5
- 2.Re3#
- 2.Qxe5#
- 1...Bxe6!
- 1...Be5
- 1.Qb7+?
- 1...Bd5
- 2.Qxd5#
- 1...Kf5!
- 1...Bd5
- 1.Qe7+?
- 1...Kf5
- 2.Sg7#
- 1...Be5
- 2.Qxe5#
- 1...Be6!
- 1...Kf5
- 1.Sg3+?
- Keys
- 1.Rd2!
- 1...Bxd2
- 2.Sxd2#
- 1...gxh5
- 2.Qxh7#
- 1...Be6
- 2.Qd3#
- 1...Ba2
- 2.Qd3#
- 1...Bb3
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bb5
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Ba6
- 2.Qd5#
- 1...Bf7
- 2.Qd3#
- 1...Bg8
- 2.Qd3#
- 1...Bh2
- 2.Re3#
- 1...Be3
- 2.Rxe3#
- 1...Bg3
- 2.Re3#
- 1...Be5
- 2.Re3#
- 1...Bd6
- 2.Re3#
- 1...Bc7
- 2.Re3#
- 1...Bb8
- 2.Re3#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 1...g3
- 2.f3#
- 1...h6
- 2.Bxg6#
- 1...Bxd2
- 1.Rd2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- B(d);N_GUARD::S(A),XB(d)
- B(d);N_GUARD::R1(E),XB(d)
- B(d);N_GUARD::R1(E)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(e);N_GUARD::P(C)
- P(h);OGATEB,XS(F)::QAB(G),XP(i)
- P(i);N_GUARD::B(H),XP(h)
- Tries
- Try
- S(F);CHECK
- Vars
- S(a);XS(F)::S(A)
- Refutation
- B(d);XS(F)
- Try
- B(I);
- Vars
- P(h);OGATEB,XS(F)::QAB(G),XP(i)
- B(b);N_GUARD::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- B(d);N_GUARD::S(A),XB(d)
- B(d);N_GUARD::R1(E),XB(d)
- B(d);N_GUARD::R1(E)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(e);N_GUARD::P(C)
- P(i);N_GUARD::B(H),XP(h)
- Refutation
- B(d);
- Try
- R(E);
- Vars
- B(b);N_GUARD,XR(E)::QAB1(G)
- P(h);OGATEB,XS(F)::QAB(G),XP(i)
- B(b);N_GUARD::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- B(d);N_GUARD::S(A),XB(d)
- B(d);N_GUARD::R1(E),XB(d)
- B(d);N_GUARD::R1(E)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(e);N_GUARD::P(C)
- P(i);N_GUARD::B(H),XP(h)
- Refutation
- B(d);
- Try
- R(E);
- Vars
- B(d);N_GUARD,XR(E)::S(A)
- S(a);N_GUARD,XR(E)::S(A)
- P(h);OGATEB,XS(F)::QAB(G),XP(i)
- B(b);N_GUARD::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- B(d);N_GUARD::S(A),XB(d)
- B(d);N_GUARD::R1(E),XB(d)
- B(d);N_GUARD::R1(E)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(i);N_GUARD::B(H),XP(h)
- Refutation
- B(d);
- Try
- R(E);P_PINB(b)
- Threat
- DUALS(2)
- Vars
- B(d);N_GUARD::S(A),XB(d)
- S(a);N_GUARD,N_SPINB(b)::S(A)
- Refutation
- B(d);
- Try
- Q(G);P_PINB(d),XP(e)
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD::B(H)
- S(a);N_GUARD::S(A)
- Refutation
- B(b);
- Try
- Q(G);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAB1(G),XB(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(G);CHECK
- Refutation
- B(b);XQ(G)
- Try
- Q(G);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAB1(G),XB(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(G);CHECK
- Vars
- K(c);S_CUTB(b),S_CUTB(d),S_FLIGHT::S(F)
- B(d);N_GUARD,P_SPINB(d)::QAR1(G),XB(d)
- Refutation
- B(b);P_SPINB(b)
- Try
- Actual
- R(B);
- Vars
- B(d);XR(B)::S(A),XB(d)
- P(h);OGATEB,XS(F)::QAB(G),XP(i)
- B(b);N_GUARD::QAB1(G)
- B(b);N_GUARD::QAB1(G),XB(b)
- B(d);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E),XB(d)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(e);N_GUARD::P(C)
- P(i);N_GUARD::B(H),XP(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).