MESON Chess Problem Database
Problem Display
PID: 62962 (3K4/8/4Q3/ppkn4/r1pRp3/p7/P3RB2/2N5 w - - 0 1)
Lockett, Andrew M
Chess Life, 1967
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Rxd5#
- 1...Sc3
- 2.Rxc4#
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Sb4
- 2.Rxc4#
- 2.Rdxe4#
- 2.Rd5#
- 2.Qd6#
- 1...Sf4
- 2.Rxc4#
- 2.Qd6#
- 1...Sb6
- 2.Rxc4#
- 2.Qd6#
- 1...Sf6
- 2.Rxc4#
- 2.Qd6#
- 1...Sc7
- 2.Rxc4#
- 2.Qd6#
- 1...Se7
- 2.Rxc4#
- 2.Qd6#
- 1...c3
- 2.Sb3#
- 1...b4
- 2.Rxd5#
- 1...Rb4
- Tries
- 1.Be1?
- threat
- 2.Rxd5#
- 1...Sc3
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Sb4
- 2.Qd6#
- 1...Sf4
- 2.Qd6#
- 1...Sb6
- 2.Qd6#
- 1...Sf6
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...c3
- 2.Sb3#
- 1...Kxd4!
- threat
- 1.Be3?
- 1...Sxe3
- 2.Qd6#
- 1...Rb4
- 2.Rxd5#
- 1...Sc3
- 2.Rxc4#
- 2.Qd6#
- 1...Sb4
- 2.Rd1#
- 2.Rdd2#
- 2.Rd3#
- 2.Rxc4#
- 2.Rxe4#
- 2.Rd5#
- 2.Rd6#
- 2.Rd7#
- 2.Qd6#
- 1...Sf4
- 2.Rxc4#
- 2.Qd6#
- 1...Sb6
- 2.Rxc4#
- 2.Qd6#
- 1...Sf6
- 2.Rxc4#
- 2.Qd6#
- 1...Sc7
- 2.Rxc4#
- 2.Qd6#
- 1...Se7
- 2.Rxc4#
- 2.Qd6#
- 1...c3
- 2.Sb3#
- 1...b4
- 2.Rxd5#
- 1...Kb4!
- 1...Sxe3
- 1.Rb2?
- threat
- 2.Rxd5#
- 1...Se3
- 2.Rd5#
- 2.Qd6#
- 1...Sc3
- 2.Rxc4#
- 2.Rxe4#
- 2.Rd5#
- 2.Qd6#
- 1...Sb4
- 2.Rxc4#
- 2.Rxe4#
- 2.Rd5#
- 2.Qd6#
- 1...Sf4
- 2.Rxc4#
- 2.Rxe4#
- 2.Rd5#
- 2.Qd6#
- 1...Sb6
- 2.Rxc4#
- 2.Rxe4#
- 2.Rd5#
- 2.Qd6#
- 1...Sf6
- 2.Rxc4#
- 2.Rxe4#
- 2.Rd5#
- 2.Qd6#
- 1...Sc7
- 2.Rxc4#
- 2.Rxe4#
- 2.Rd5#
- 2.Qd6#
- 1...Se7
- 2.Rxc4#
- 2.Rxe4#
- 2.Rd5#
- 2.Qd6#
- 1...c3
- 2.Sb3#
- 1...axb2!
- threat
- 1.Rc2?
- threat
- 2.Rdxc4#
- 1...Kb4
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...c3
- 2.Sb3#
- 1...b4
- 2.Rxd5#
- 1...e3!
- threat
- 1.Rexe4?
- threat
- 2.Rxc4#
- 1...Se3
- 2.Qd6#
- 1...c3
- 2.Sb3#
- 2.Sd3#
- 2.Rc4#
- 2.Rxd5#
- 1...b4
- 2.Rxd5#
- 1...Kb4!
- threat
- 1.Rd3+?
- 1...Kb4
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...e3!
- 1...Kb4
- 1.Qxd5+?
- 1...Kb4
- 2.Be1#
- 1...Kb6!
- 1...Kb4
- 1.Be1?
- Keys
- 1.Re3!
- 1...Kb4
- 2.Qd6#
- 1...Kxd4
- 2.Rd3#
- 1...Sxe3
- 2.Qd6#
- 1...Rb4
- 2.Rxd5#
- 1...Sc3
- 2.Qd6#
- 1...Sb4
- 2.Qd6#
- 1...Sf4
- 2.Qd6#
- 1...Sb6
- 2.Qd6#
- 1...Sf6
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...c3
- 2.Sb3#
- 1...b4
- 2.Rxd5#
- 1...Kb4
- 1.Re3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- R(b);SBLOCK::B(D)+R(E),DCHECK,XS(h)
- S(h);::QAB1(F)
- P(c);N_GUARD::S(A)
- P(f);SBLOCK::B(D)+R(E),DCHECK,XS(h)
- Tries
- Try
- B(D);
- Threat
- R1(E),XS(h)
- Vars
- S(h);::QAB1(F)
- P(c);N_GUARD::S(A)
- Refutation
- K(g);S_FLIGHT,XR(E)
- Try
- B(D);
- Vars
- S(h);XB(D)::QAB1(F)
- R(b);SBLOCK::B(D)+R(E),DCHECK,XS(h)
- P(c);N_GUARD::S(A)
- P(f);SBLOCK::B(D)+R(E),DCHECK,XS(h)
- Refutation
- K(g);P_SPINP(c),S_FLIGHT
- Try
- R(C);
- Threat
- B(D)+R(E),DCHECK,XS(h)
- Vars
- P(c);N_GUARD::S(A)
- Refutation
- P(a);XR(C)
- Try
- R(C);P_PINP(c)
- Threat
- B(D)+R(E),DCHECK,XP(c)
- Vars
- K(g);S_FLIGHT::QAB(F)
- S(h);::QAB1(F)
- P(c);::S(A)
- P(f);SBLOCK::B(D)+R(E),DCHECK,XS(h)
- Refutation
- P(d);
- Try
- R(C);XP(d)
- Threat
- B(D)+R(E),DCHECK,XP(c)
- Vars
- S(h);::QAB1(F)
- P(f);SBLOCK::B(D)+R(E),DCHECK,XS(h)
- Refutation
- K(g);P_SPINP(c),S_FLIGHT
- Try
- R(E);CHECK
- Vars
- K(g);S_FLIGHT::QAB(F)
- S(h);P_SPINS(h)::QAB1(F)
- Refutation
- P(d);P_SPINP(d)
- Try
- Q(F);CHECK,XS(h)
- Vars
- K(g);P_SPINP(c),S_FLIGHT::B(D)
- Refutation
- K(g);S_FLIGHT
- Try
- Actual
- R(C);
- Vars
- K(g);P_SPINP(c),S_FLIGHT::QAB(F)
- K(g);OGATEB,S_FLIGHT,XR(E)::B(D)+R(C),DCHECK
- S(h);XR(C)::QAB1(F)
- R(b);SBLOCK::R1(E),XS(h)
- S(h);::QAB1(F)
- S(h);SBLOCK::QAB1(F)
- P(c);N_GUARD::S(A)
- P(f);SBLOCK::R1(E),XS(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).