MESON Chess Problem Database
Problem Display
PID: 267957 (8/6p1/pK2p3/Rp1NB1p1/1Q1PkpP1/pP3R2/P1N1B3/1n6 w - - 0 1)
Maslov, Boris Grigorevich
Shakhmatnaya kompozitsiya, 1995
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...g6
- 2.Sf6#
- 1...Sd2
- Tries
- 1.Kc5?
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...g6
- 2.Sf6#
- 1...exd5!
- 1...Sd2
- 1.Kc6?
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...g6
- 2.Sf6#
- 1...exd5!
- 1...Sd2
- 1.Se1?
- 1...exd5
- 2.Bd3#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...g6
- 2.Sf6#
- 1...Kxd5!
- 1...exd5
- 1.Bd1?
- 1...exd5
- 2.Qe1#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...g6
- 2.Sf6#
- 1...Kxd5!
- 1...exd5
- 1.Bd3+?
- 1...Kxd5
- 2.Qc5#
- 2.Qd6#
- 2.Qc4#
- 1...Kxf3!
- 1...Kxd5
- 1.Bxg7?
- threat
- 2.Sf6#
- 1...exd5
- 2.Qe7#
- 1...Kxd5!
- threat
- 1.Rc3?
- threat
- 2.Bf3#
- 1...Kxd5
- 2.Bf3#
- 1...Sxc3
- 2.Sxc3#
- 1...f3
- 2.Bxf3#
- 1...Sd2!
- threat
- 1.Re3+?
- 1...Kxd5
- 2.Bf3#
- 2.Bc4#
- 2.Qc5#
- 2.Qd6#
- 2.Qc4#
- 1...fxe3!
- 1...Kxd5
- 1.Rh3?
- 1...Kxd5
- 2.Bf3#
- 1...exd5
- 2.Bd3#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...g6
- 2.Sf6#
- 1...f3!
- 1...Kxd5
- 1.Rxf4+?
- 1...Kxd5
- 2.Se3#
- 2.Bf3#
- 2.Bc4#
- 2.Qc5#
- 2.Qd6#
- 2.Qc4#
- 1...gxf4!
- 1...Kxd5
- 1.Qd2?
- 1...Sxd2
- 2.Sc3#
- 1...exd5
- 2.Qd3#
- 1...Sc3
- 2.Sxc3#
- 1...b4
- 2.Qd3#
- 1...g6
- 2.Sf6#
- 1...Kxd5!
- 1...Sxd2
- 1.Qc3?
- 1...Kxd5
- 2.Qc6#
- 1...Sxc3
- 2.Sxc3#
- 1...exd5
- 2.Qd3#
- 1...b4
- 2.Qd3#
- 1...g6
- 2.Sf6#
- 1...Sd2!
- 1...Kxd5
- 1.Qd6?
- 1...exd5
- 2.Qg6#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...g6
- 2.Sf6#
- 1...b4!
- 1...exd5
- 1.Qe7?
- 1...Kxd5
- 2.Qb7#
- 1...exd5
- 2.Bxf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bxg7#
- 2.Bb8#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...g6
- 2.Sf6#
- 1...b4!
- 1...Kxd5
- 1.Qf8?
- 1...Kxd5
- 2.Qa8#
- 1...exd5
- 2.Qf5#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...g6
- 2.Sf6#
- 1...b4!
- 1...Kxd5
- 1.Qc4?
- 1...exd5
- 2.Qd3#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...b4
- 2.Qd3#
- 1...g6
- 2.Sf6#
- 1...bxc4!
- 1...exd5
- 1.Kc5?
- Keys
- 1.Qe1!
- 1...Kxd5
- 2.Bc4#
- 1...exd5
- 2.Bd1#
- 1...Sd2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...b4
- 2.Bd1#
- 1...g6
- 2.Sf6#
- 1...Kxd5
- 1.Qe1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(i);N_GUARD::S(J)
- Tries
- Try
- K(L);S_FLIGHT
- Vars
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(i);N_GUARD::S(J)
- Refutation
- P(h);XS(J)
- Try
- K(L);P-FLIGHT
- Vars
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(i);N_GUARD::S(J)
- Refutation
- P(h);XS(J)
- Try
- S(B);
- Vars
- P(h);SBLOCK,XS(J)::B(C)
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(i);N_GUARD::S(J)
- Refutation
- K(c);P_SPINP(e),S_FLIGHT,XS(J)
- Try
- B(C);
- Vars
- P(h);SBLOCK,XS(J)::QAR(F)
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(i);N_GUARD::S(J)
- Refutation
- K(c);P_SPINP(e),S_FLIGHT,XS(J)
- Try
- B(C);CHECK
- Refutation
- K(c);S_FLIGHT,XR(E)
- Try
- B(K);XP(i)
- Threat
- S(J)
- Vars
- P(h);OGATEB,SBLOCK,XS(J)::QAR(F)
- Refutation
- K(c);P_SPINP(e),S_FLIGHT,XS(J)
- Try
- R(E);
- Threat
- B(C)
- Vars
- K(c);P_SPINP(e),S_FLIGHT,XS(J)::B(C)
- S(a);XR(E)::S(J),XS(a)
- P(d);::B(C),XP(d)
- Refutation
- S(a);
- Try
- R(E);CHECK
- Refutation
- P(d);XR(E)
- Try
- R(E);
- Vars
- K(c);N_GUARD,P_SPINP(e),S_FLIGHT,XS(J)::B(C)
- P(h);SBLOCK,XS(J)::B(C)
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(i);N_GUARD::S(J)
- Refutation
- P(d);
- Try
- R(E);CHECK,XP(d)
- Refutation
- P(f);XR(E)
- Try
- Q(F);
- Vars
- S(a);N_GUARD,XQ(F)::S(J)
- P(h);SBLOCK,XS(J)::QAB1(F)
- S(a);N_GUARD::S(J),XS(a)
- P(e);::QAB1(F)
- P(i);N_GUARD::S(J)
- Refutation
- K(c);P_SPINP(e),S_FLIGHT,XS(J)
- Try
- Q(F);
- Vars
- K(c);OGATEB,P_SPINP(e),S_FLIGHT,XS(J)::QAB1(F)
- S(a);XQ(F)::S(J),XS(a)
- P(h);SBLOCK,XS(J)::QAB1(F)
- P(e);::QAB1(F)
- P(i);N_GUARD::S(J)
- Refutation
- S(a);
- Try
- Q(F);
- Vars
- P(h);OGATE,SBLOCK,XS(J)::QAB(F)
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(i);N_GUARD::S(J)
- Refutation
- P(e);
- Try
- Q(F);
- Vars
- K(c);OGATEB,P_SPINP(e),S_FLIGHT,XS(J)::QAB(F)
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(i);N_GUARD::S(J)
- Refutation
- P(e);
- Try
- Q(F);
- Vars
- K(c);OGATEB,P_SPINP(e),S_FLIGHT,XS(J)::QAB(F)
- P(h);N_GUARD,SBLOCK,XS(J)::QAB1(F)
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(i);N_GUARD::S(J)
- Refutation
- P(e);
- Try
- Q(F);
- Vars
- P(h);SBLOCK,XS(J)::QAB1(F)
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(e);::QAB1(F)
- P(i);N_GUARD::S(J)
- Refutation
- P(e);XQ(F)
- Try
- Actual
- Q(F);
- Vars
- K(c);N_GUARD,P_SPINP(e),S_FLIGHT,XS(J)::B(C)
- P(h);SBLOCK,XS(J)::QAR(F)+B(C)
- S(a);N_GUARD::S(J)
- S(a);N_GUARD::S(J),XS(a)
- P(e);::QAR(F)+B(C)
- P(i);N_GUARD::S(J)
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).