MESON Chess Problem Database
Problem Display
PID: 244338 (KR1nR3/PN1Nn3/7r/Q6q/P1k5/b1B1P3/P1PPb1B1/1r6 w - - 0 1)
Zhilko, Dmitri Vitalevich
Shakhmatnaya kompozitsiya, 1993
#2
14 + 8
SOLUTION
- SOUND
- Sets
- 1...Qf3
- 2.Se5#
- 1...Qg4
- 2.Se5#
- 1...Qg6
- 2.Se5#
- 1...Qf7
- 2.Se5#
- 1...Qxe8
- 2.Se5#
- 1...Qh1
- 2.Se5#
- 1...Qh3
- 2.Se5#
- 1...Qh4
- 2.Se5#
- 1...Qxa5
- 2.Sxa5#
- 1...Qe5
- 2.Sxe5#
- 1...Rb3
- 2.axb3#
- 1...Bd1
- 2.d3#
- 1...Bf3
- 2.d3#
- 1...Bg4
- 2.d3#
- 1...Bb2
- 2.Qb4#
- 1...Sd5
- 2.Re4#
- 1...Sf5
- 2.Se5#
- 2.Bd5#
- 2.Qd5#
- 1...Sg6
- 2.Re4#
- 1...Sc8
- 2.Re4#
- 1...Sg8
- 2.Re4#
- 1...Qf3
- Tries
- 1.Bd5+?
- 1...Sxd5
- 2.Re4#
- 1...Qxd5!
- 1...Sxd5
- 1.Be5?
- threat
- 2.Qc3#
- 1...Qxe5
- 2.Sxe5#
- 1...Rb4
- 2.Qc5#
- 1...Rb3
- 2.axb3#
- 1...Bf3
- 2.d3#
- 1...Bb2
- 2.Qb5#
- 2.Qc5#
- 1...Bb4
- 2.Qb5#
- 1...Sd5
- 2.Bxd5#
- 1...Qf3!
- threat
- 1.Qc5+?
- 1...Bxc5
- 2.Sa5#
- 1...Qxc5!
- 1...Bxc5
- 1.Qd5+?
- 1...Sxd5
- 2.Sa5#
- 2.Re4#
- 1...Qxd5!
- 1...Sxd5
- 1.Qe5?
- threat
- 2.Sa5#
- 2.Qd4#
- 2.Qf4#
- 2.Qe4#
- 1...Qxe5
- 2.Sxe5#
- 1...Rxb7
- 2.Qd4#
- 2.Qf4#
- 2.Qe4#
- 1...Sxb7
- 2.Qd4#
- 2.Qf4#
- 2.Qe4#
- 1...Qf3
- 2.Qd4#
- 1...Qg4
- 2.Sa5#
- 1...Qg6
- 2.Sa5#
- 2.Qd4#
- 1...Qf7
- 2.Sa5#
- 2.Qd4#
- 2.Qe4#
- 1...Qh2
- 2.Sa5#
- 2.Qd4#
- 2.Qe4#
- 1...Qh4
- 2.Sa5#
- 1...Qf5
- 2.Sa5#
- 2.Qd4#
- 1...Qg5
- 2.Sa5#
- 2.Qd4#
- 2.Qe4#
- 1...Rf1
- 2.Sa5#
- 2.Qd4#
- 2.Qe4#
- 1...Rb5
- 2.Qd4#
- 2.Qf4#
- 2.Qe4#
- 1...Ra6
- 2.Qd4#
- 2.Qf4#
- 2.Qe4#
- 1...Rd6
- 2.Sa5#
- 1...Re6
- 2.Sa5#
- 2.Qd4#
- 1...Rf6
- 2.Sa5#
- 2.Qd4#
- 2.Qe4#
- 1...Bd3
- 2.Sa5#
- 2.Qd4#
- 1...Bf3
- 2.Qd4#
- 2.d3#
- 1...Bb4
- 2.Qd4#
- 2.Qf4#
- 2.Qe4#
- 1...Bc5
- 2.Sa5#
- 1...Bd6
- 2.Sa5#
- 2.Qd4#
- 2.Qe4#
- 1...Sd5
- 2.Sa5#
- 2.Bxd5#
- 2.Qd4#
- 2.Qe4#
- 1...Sf5
- 2.Sa5#
- 2.Bd5#
- 2.Qd5#
- 1...Sec6
- 2.Bd5#
- 1...Sg6
- 2.Sa5#
- 2.Bd5#
- 2.Qd4#
- 2.Qe4#
- 1...Se6
- 2.Sa5#
- 1...Sdc6!
- threat
- 1.Qa6+?
- 1...Qb5
- 2.Sa5#
- 2.Se5#
- 1...Rb5
- 2.Sa5#
- 1...Rxa6!
- 1...Qb5
- 1.Bd5+?
- Keys
- 1.Bf6!
- threat
- 2.Qc3#
- 1...Qxa5
- 2.Sxa5#
- 1...Rb4
- 2.Sd6#
- 1...Qf3
- 2.Se5#
- 1...Qe5
- 2.Sxe5#
- 1...Rb3
- 2.axb3#
- 1...Bf3
- 2.d3#
- 1...Bb2
- 2.Sd6#
- 2.Sb6#
- 1...Bb4
- 2.Sb6#
- 1...Sd5
- 2.Re4#
- threat
- 1.Bf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- Q(e);N_GUARD,P_PINS(J)::S(K)
- Q(e);N_GUARD::S(K)
- Q(e);N_GUARD,XR(N)::S(K)
- Q(e);P_PINP(I),XQ(H)::S(J),XQ(e)
- Q(e);N_GUARD::S(K),XQ(e)
- R(a);OGATE::P(A),XR(a)
- B(b);N_GUARD::P(C)
- B(b);N_GUARD,P_PINS(J)::P(C)
- B(c);N_GUARD,S_CUTR(a)::QAR1(H)
- S(g);OGATE::R(N)
- Tries
- Try
- B(D);CHECK
- Vars
- S(g);OGATE,XB(D)::R(N)
- Refutation
- Q(e);P_PINS(J),XB(D)
- Try
- B(E);
- Threat
- QAR1(H)
- Vars
- Q(e);XB(E)::S(K),XQ(e)
- R(a);S_CUTB(c)::QAR1(H)
- R(a);OGATE::P(A),XR(a)
- B(b);N_GUARD,P_PINS(J)::P(C)
- B(c);S_CUTR(a)::QAB1(H)
- S(g);N_GUARD::B(D),XS(g)
- Refutation
- Q(e);P_PINS(J)
- Try
- Q(H);CHECK
- Vars
- B(c);XQ(H)::S(J)
- Refutation
- Q(e);XQ(H)
- Try
- Q(H);CHECK
- Refutation
- Q(e);P_PINS(J),XQ(H)
- Try
- Q(H);
- Threat
- DUALS(4)
- Vars
- Q(e);XQ(H)::S(K),XQ(e)
- Q(e);P_PINS(J)::QAR1(H)
- Q(e);::S(J)
- R(f);::S(J)
- B(c);::S(J)
- S(g);N_GUARD::B(D)
- S(h);::S(J)
- Refutation
- S(h);
- Try
- Q(H);CHECK
- Vars
- R(a);P_SPINR(a)::S(J)
- Refutation
- R(f);P_PINP(I),XQ(H)
- Try
- Actual
- B(E);
- Threat
- QAR1(H)
- Vars
- Q(e);P_PINP(I),XQ(H)::S(J),XQ(e)
- R(a);S_CUTB(c)::S(J)
- Q(e);N_GUARD,P_PINS(J)::S(K)
- Q(e);N_GUARD::S(K),XQ(e)
- R(a);OGATE::P(A),XR(a)
- B(b);N_GUARD,P_PINS(J)::P(C)
- B(c);S_CUTR(a)::S(K)
- S(g);OGATE::R(N)
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).