MESON Chess Problem Database
Problem Display
PID: 224614 (K4Q1b/1pp5/1N6/8/2Nk4/1nR1p1R1/b4nB1/B6r w - - 0 1)
Mackenzie, Arthur Ford
The Sunny South, 1888
#2
8 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rh2
- 2.Rxb3#
- 1...Rh3
- 2.Rxb3#
- 1...Rh4
- 2.Rxb3#
- 1...Rh5
- 2.Rxb3#
- 1...Rh6
- 2.Rxb3#
- 1...Rh7
- 2.Rxb3#
- 1...Bb1
- 2.Rxb3#
- 1...Sd1
- 2.Rg4#
- 1...Sg4
- 2.Rxg4#
- 1...Sc1
- 2.Ra3#
- 2.Rb3#
- 2.Rcxe3#
- 1...e2
- 2.Rcd3#
- 2.Qxf2#
- 1...cxb6
- 2.Qd6#
- 1...c5
- 2.Qd6#
- 2.Qd8#
- 1...c6
- 2.Qd6#
- 1...Rh2
- Tries
- 1.Sa3?
- 1...Ke5
- 2.Rcxe3#
- 1...Rxa1
- 2.Qxh8#
- 1...Sxa1
- 2.Qc5#
- 1...cxb6
- 2.Qd6#
- 1...Rb1
- 2.Qxh8#
- 1...Rc1
- 2.Qxh8#
- 1...Rd1
- 2.Qxh8#
- 1...Re1
- 2.Qxh8#
- 1...Rf1
- 2.Qxh8#
- 1...Rg1
- 2.Qxh8#
- 1...Rh2
- 2.Rxb3#
- 1...Rh3
- 2.Rxb3#
- 1...Rh4
- 2.Rxb3#
- 1...Rh5
- 2.Rxb3#
- 1...Rh6
- 2.Rxb3#
- 1...Rh7
- 2.Rxb3#
- 1...Bb1
- 2.Rxb3#
- 1...Be5
- 2.Sc2#
- 2.Sb5#
- 2.Qb4#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1
- 2.Qf4#
- 1...Sd3
- 2.Rc4#
- 1...Sh3
- 2.Qxh8#
- 1...Sg4
- 2.Qf4#
- 1...Sc1
- 2.Rb3#
- 2.Rcxe3#
- 2.Qc5#
- 1...Sd2
- 2.Qc5#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...e2
- 2.Rcd3#
- 2.Rc4#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...Se4!
- 1...Ke5
- 1.Sa5?
- 1...Ke5
- 2.Rcxe3#
- 1...Rxa1
- 2.Qxh8#
- 1...Sxa1
- 2.Qc5#
- 1...Sxa5
- 2.Qc5#
- 1...cxb6
- 2.Qd6#
- 1...Rb1
- 2.Qxh8#
- 1...Rc1
- 2.Qxh8#
- 1...Rd1
- 2.Qxh8#
- 1...Re1
- 2.Qxh8#
- 1...Rf1
- 2.Qxh8#
- 1...Rg1
- 2.Qxh8#
- 1...Rh2
- 2.Rxb3#
- 1...Rh3
- 2.Rxb3#
- 1...Rh4
- 2.Rxb3#
- 1...Rh5
- 2.Rxb3#
- 1...Rh6
- 2.Rxb3#
- 1...Rh7
- 2.Rxb3#
- 1...Bb1
- 2.Rxb3#
- 1...Be5
- 2.Qb4#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1
- 2.Qf4#
- 1...Sd3
- 2.Rc4#
- 1...Sh3
- 2.Qxh8#
- 1...Sg4
- 2.Qf4#
- 1...Sc1
- 2.Ra3#
- 2.Rb3#
- 2.Rcxe3#
- 2.Qc5#
- 1...Sd2
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...e2
- 2.Rcd3#
- 2.Rc4#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...Se4!
- 1...Ke5
- 1.Se5?
- threat
- 2.Rd3#
- 2.Rc4#
- 1...Kxe5
- 2.Rcxe3#
- 1...Bxe5
- 2.Qb4#
- 1...Sxa1
- 2.Qc5#
- 1...Sd3
- 2.Rxd3#
- 2.Rc4#
- 1...Rxa1!
- threat
- 1.Rc1+?
- 1...Kd3
- 2.Rxe3#
- 1...Sxa1!
- 1...Kd3
- 1.Rg4+?
- 1...Se4
- 2.Rxe4#
- 1...Sxg4!
- 1...Se4
- 1.Qf3?
- threat
- 2.Qd5#
- 2.Qxe3#
- 1...Rxa1
- 2.Qxe3#
- 1...Sxa1
- 2.Qxe3#
- 1...Se4
- 2.Qxe3#
- 1...Re1
- 2.Qd5#
- 1...Rh5
- 2.Qxe3#
- 1...Sd1
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...e2
- 2.Qd5#
- 2.Qxf2#
- 2.Qe3#
- 1...c6
- 2.Qxe3#
- 1...Kc5!
- threat
- 1.Qf4+?
- 1...Se4
- 2.Qxe3#
- 1...Kc5!
- 1...Se4
- 1.Sa3?
- Keys
- 1.Sd2!
- 1...Ke5
- 2.Rcxe3#
- 1...Rxa1
- 2.Qxh8#
- 1...Sxa1
- 2.Qc5#
- 1...Sxd2
- 2.Qc5#
- 1...exd2
- 2.Rcd3#
- 2.Rc4#
- 1...cxb6
- 2.Qd6#
- 1...Rb1
- 2.Qxh8#
- 1...Rc1
- 2.Qxh8#
- 1...Rd1
- 2.Qxh8#
- 1...Re1
- 2.Qxh8#
- 1...Rf1
- 2.Qxh8#
- 1...Rg1
- 2.Qxh8#
- 1...Rh2
- 2.Rxb3#
- 1...Rh3
- 2.Rxb3#
- 1...Rh4
- 2.Rxb3#
- 1...Rh5
- 2.Rxb3#
- 1...Rh6
- 2.Rxb3#
- 1...Rh7
- 2.Rxb3#
- 1...Bb1
- 2.Rxb3#
- 1...Be5
- 2.Qb4#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sd1
- 2.Qf4#
- 1...Sd3
- 2.Rc4#
- 1...Sh3
- 2.Qxh8#
- 1...Se4
- 2.Sf3#
- 1...Sg4
- 2.Qf4#
- 1...Sc1
- 2.Ra3#
- 2.Rb3#
- 2.Rcxe3#
- 2.Qc5#
- 1...Sa5
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...e2
- 2.Rcd3#
- 2.Rc4#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...Ke5
- 1.Sd2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 19
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::B(A)+R(C),XS(d)
- B(b);S_CUTR(a)::B(A)+R(C),XS(d)
- S(c);N_GUARD::R(D)
- S(c);N_GUARD::R(D),XS(c)
- P(h);N_GUARD,XS(F)::QAR2(H)
- P(h);N_GUARD::QAR2(H)
- Tries
- Try
- S(E);
- Vars
- K(f);S_FLIGHT::B(A)+R(C),DCHECK,XP(e)
- R(a);N_GUARD,XB(A)::QAB(H),XB(i)
- S(d);N_GUARD,XB(A)::QAB1(H)
- P(h);N_GUARD,XS(F)::QAR2(H)
- R(a);N_GUARD::QAB(H),XB(i)
- R(a);N_GUARD::B(A)+R(C),XS(d)
- B(b);S_CUTR(a)::B(A)+R(C),XS(d)
- B(i);N_GUARD::QAB(H),XB(i)
- S(c);N_GUARD::QAR2(H)
- S(c);SBLOCK::B(A)+R(C),DCHECK
- S(c);S_CUTR(a)::QAB(H),XB(i)
- S(d);N_GUARD::QAB1(H)
- S(d);N_GUARD::QAB1(H),XS(d)
- P(h);N_GUARD::QAR2(H)
- Refutation
- S(c);
- Try
- S(E);
- Vars
- K(f);S_FLIGHT::B(A)+R(C),DCHECK,XP(e)
- R(a);N_GUARD,XB(A)::QAB(H),XB(i)
- S(d);N_GUARD,XB(A)::QAB1(H)
- S(d);N_GUARD,XS(E)::QAB1(H)
- P(h);N_GUARD,XS(F)::QAR2(H)
- R(a);N_GUARD::QAB(H),XB(i)
- R(a);N_GUARD::B(A)+R(C),XS(d)
- B(b);S_CUTR(a)::B(A)+R(C),XS(d)
- B(i);SBLOCK::QAR2(H)
- B(i);N_GUARD::QAB(H),XB(i)
- S(c);N_GUARD::QAR2(H)
- S(c);SBLOCK::B(A)+R(C),DCHECK
- S(c);S_CUTR(a)::QAB(H),XB(i)
- S(d);N_GUARD::QAB1(H)
- S(d);N_GUARD::QAB1(H),XS(d)
- P(h);N_GUARD::QAR2(H)
- Refutation
- S(c);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- K(f);S_FLIGHT,XS(E)::B(A)+R(C),DCHECK,XP(e)
- B(i);SBLOCK,XS(E)::QAR2(H)
- S(d);N_GUARD,XB(A)::QAB1(H)
- Refutation
- R(a);XB(A)
- Try
- R(C);CHECK
- Vars
- K(f);P-FLIGHT,P_SPINP(e)::R1(D),XP(e)
- Refutation
- S(d);XB(A)
- Try
- R(D);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::R1(D),XS(c)
- Refutation
- S(c);XR(D)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(a);XB(A)::QAB1(H),XP(e)
- S(d);XB(A)::QAB1(H),XP(e)
- S(c);::QAB1(H),XP(e)
- R(a);::QAR1(H)
- R(a);::QAB1(H),XP(e)
- S(c);::QAR1(H)
- P(h);::QAB1(H),XP(e)
- Refutation
- K(f);S_FLIGHT
- Try
- Q(H);CHECK
- Vars
- S(c);P_SPINS(c)::QAB1(H),XP(e)
- Refutation
- K(f);S_FLIGHT
- Try
- Actual
- S(E);
- Vars
- K(f);S_FLIGHT::B(A)+R(C),DCHECK,XP(e)
- R(a);N_GUARD,XB(A)::QAB(H),XB(i)
- S(d);N_GUARD,XB(A)::QAB1(H)
- S(d);N_GUARD,XS(E)::QAB1(H)
- P(h);N_GUARD,XS(F)::QAR2(H)
- R(a);N_GUARD::QAB(H),XB(i)
- R(a);N_GUARD::B(A)+R(C),XS(d)
- B(b);S_CUTR(a)::B(A)+R(C),XS(d)
- B(i);SBLOCK::QAR2(H)
- B(i);N_GUARD::QAB(H),XB(i)
- S(c);N_GUARD::QAR2(H)
- S(c);SBLOCK::B(A)+R(C),DCHECK
- S(c);S_CUTR(a)::QAB(H),XB(i)
- S(c);SBLOCK::S(E)
- S(d);N_GUARD::QAB1(H)
- S(d);N_GUARD::QAB1(H),XS(d)
- P(h);N_GUARD::QAR2(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).