MESON Chess Problem Database
Problem Display
PID: 180473 (2Kn3B/2Q1P1r1/3p2N1/3k1B1R/8/1N6/2PqPn2/2rRb3 w - - 0 1)
Lider, Valentin Viktorovich
2nd HM., British Chess Magazine, 1978
#2
11 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Rxd4#
- 1...Ra1
- 2.c4#
- 1...Rb1
- 2.c4#
- 1...Rxd1
- 2.c4#
- 1...Rxe7
- 2.Sf4#
- 2.Sxe7#
- 1...Rf7
- 2.Sf4#
- 1...Rh7
- 2.Sf4#
- 1...Rg8
- 2.Sf4#
- 1...Sxd1
- 2.e4#
- 1...Sh1
- 2.e4#
- 1...Sd3
- 2.e4#
- 1...Sh3
- 2.e4#
- 1...Sg4
- 2.e4#
- 1...Qd4
- Tries
- 1.Bd3+?
- 1...Qg5
- 2.Qc4#
- 1...Ke6!
- 1...Qg5
- 1.Rxd2+?
- 1...Sd3
- 2.Rxd3#
- 2.e4#
- 1...Bxd2!
- 1...Sd3
- 1.Qa5+?
- 1...Kc6
- 2.Bd7#
- 2.exd8S#
- 1...Kc4!
- 1...Kc6
- 1.Qxd6+?
- 1...Kc4
- 2.Qc5#
- 1...Kxd6!
- 1...Kc4
- 1.exd8S?
- threat
- 2.Qc6#
- 1...Rxc2
- 2.Bxc2#
- 1...Rxc7+!
- threat
- 1.e8Q?
- threat
- 2.Sf4#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bd7#
- 2.Qb5#
- 1...Rxd1
- 2.Be4#
- 2.Qb5#
- 2.c4#
- 1...Rxc2
- 2.Sf4#
- 2.Bxc2#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bd7#
- 1...Rxg6
- 2.Be4#
- 2.Bxg6#
- 2.Qb5#
- 1...Sxd1
- 2.Be4#
- 2.Qb5#
- 2.Qe4#
- 2.e4#
- 1...Sc6
- 2.Qexc6#
- 2.Qcxc6#
- 2.Qe6#
- 1...Se4
- 2.Sf4#
- 2.Bxe4#
- 2.Be6#
- 2.Qxe4#
- 1...Rd7
- 2.Sf4#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bxd7#
- 1...Re7
- 2.Sf4#
- 2.Sxe7#
- 2.Qb5#
- 1...Rf7
- 2.Sf4#
- 2.Be4#
- 2.Qb5#
- 1...Rh7
- 2.Sf4#
- 2.Be4#
- 2.Qb5#
- 1...Sd3
- 2.Be4#
- 2.Qe4#
- 2.e4#
- 1...Sh3
- 2.Bxh3#
- 2.Be4#
- 2.Qb5#
- 2.Qe4#
- 2.e4#
- 1...Sg4
- 2.Sf4#
- 2.Be4#
- 2.Bxg4#
- 2.Qb5#
- 2.Qe4#
- 2.e4#
- 1...Se6
- 2.Qec6#
- 2.Qcc6#
- 2.Qxe6#
- 1...Sb7
- 2.Sf4#
- 2.Bh3#
- 2.Be4#
- 2.Bg4#
- 2.Bd7#
- 2.Qec6#
- 2.Qcc6#
- 2.Qe6#
- 1...Sf7
- 2.Sf4#
- 2.Be4#
- 2.Qb5#
- 2.Qec6#
- 2.Qcc6#
- 2.Qe6#
- 1...Rxc7+!
- threat
- 1.Bd3+?
- Keys
- 1.Kd7!
- 1...Rxe7+
- 2.Sxe7#
- 1...Qxd1
- 2.Bd3#
- 1...Rxd1
- 2.c4#
- 1...Rxc2
- 2.Bxc2#
- 1...Rxg6
- 2.Bxg6#
- 1...Sxd1
- 2.e4#
- 1...Sc6
- 2.Qxc6#
- 1...Qd3
- 2.Bxd3#
- 1...Qd4
- 2.Rxd4#
- 1...Ra1
- 2.c4#
- 1...Rb1
- 2.c4#
- 1...Rf7
- 2.Sf4#
- 1...Rh7
- 2.Sf4#
- 1...Rg8
- 2.Sf4#
- 1...Sh1
- 2.e4#
- 1...Sd3
- 2.e4#
- 1...Sh3
- 2.e4#
- 1...Se4
- 2.Be6#
- 1...Sg4
- 2.e4#
- 1...Se6
- 2.Qc6#
- 1...Sb7
- 2.Qc6#
- 1...Sf7
- 2.Qc6#
- 1...Rxe7+
- 1.Kd7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- Q(c);OGATE::R1(A),XQ(c)
- R(a);N_GUARD::P(B)
- R(a);N_GUARD,N_SPINQ(c),XR(A)::P(B)
- R(g);::S(G)
- S(d);N_GUARD,N_SPINQ(c),XR(A)::P(C)
- S(d);N_GUARD::P(C)
- S(d);N_GUARD,N_SPINQ(c)::P(C)
- Tries
- Try
- B(E);CHECK,N_PINQ(c)
- Vars
- Q(c);P_SPINQ(c)::QAB1(H)
- Refutation
- K(e);S_FLIGHT
- Try
- R(A);CHECK,XQ(c)
- Refutation
- B(b);XR(A)
- Try
- Q(H);CHECK,P_SPINP(B)
- Refutation
- K(e);N_PINP(B),N_SPINQ(c),S_FLIGHT
- Try
- Q(H);CHECK,P_SPINP(B),XP(f)
- Vars
- K(e);N_PINP(B),N_SPINQ(c),S_FLIGHT::QAR1(H)
- Refutation
- K(e);P-FLIGHT,XQ(H)
- Try
- P(I);XS(h)
- Threat
- QAB1(H)
- Vars
- R(a);OGATE,P_PINQ(H),XP(B)::R(F)+B(E),XR(a)
- Refutation
- R(g);CHECK,XQ(H)
- Try
- P(I);
- Threat
- DUALS(6)
- Refutation
- R(g);CHECK,XQ(H)
- Try
- Actual
- K(J);P_SPINP(I),S_FLIGHT
- Vars
- R(g);CHECK,XP(I)::S(G),XR(g)
- Q(c);N_GUARD,N_SPINQ(c),XR(A)::R(F)+B(E)
- R(a);N_GUARD,N_SPINQ(c),XR(A)::P(B)
- R(a);OGATE,XP(B)::R(F)+B(E),XR(a)
- R(g);N_PINP(I),OGATE,XS(G)::R(F)+B(E),XR(g)
- S(d);N_GUARD,N_SPINQ(c),XR(A)::P(C)
- S(h);N_GUARD::QAB1(H),XS(h)
- Q(c);N_GUARD::R(F)+B(E),XQ(c)
- Q(c);OGATE::R1(A),XQ(c)
- R(a);N_GUARD::P(B)
- R(g);::S(G)
- R(g);N_PINP(I)::S(G)
- S(d);N_GUARD::P(C)
- S(d);N_GUARD,N_SPINQ(c)::P(C)
- S(d);SBLOCK::R(F)+B(E),DCHECK
- S(h);N_GUARD::QAB1(H)
- S(h);N_GUARD,N_PINP(I)::QAB1(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).