MESON Chess Problem Database
Problem Display
PID: 154133 (3Br3/4pB2/2N4p/1p3kpR/pR1b2NP/KnQ2PP1/8/4n3 w - - 0 1)
Harley, Brian
Chess Pie, 1927
#2
11 + 10
| 15290 | Harley Scrapbook | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Rxd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Bg1
- 2.Sxh6#
- 2.Rf4#
- 2.Qe5#
- 1...Bf2
- 2.Sxh6#
- 2.Rf4#
- 2.Qe5#
- 1...Bxc3
- 2.Rf4#
- 1...Be3
- 2.Sxe3#
- 2.Sxh6#
- 2.Qe5#
- 1...Bc5
- 2.Sxh6#
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Bb6
- 2.Sxh6#
- 2.Rf4#
- 2.Qe5#
- 1...Bf6
- 2.Se3#
- 2.Sxh6#
- 2.Rf4#
- 1...Ba7
- 2.Sxh6#
- 2.Rf4#
- 2.Qe5#
- 1...Bg7
- 2.Se3#
- 2.Rf4#
- 1...Bh8
- 2.Se3#
- 2.Sxh6#
- 2.Rf4#
- 1...Sc2+
- 2.Qxc2#
- 1...Sg2
- 2.Qc2#
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sxf3
- 2.Qxf3#
- 1...Sa1
- 2.Sxd4#
- 1...Sc1
- 2.Sxd4#
- 1...Sd2
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Sc5
- 2.Sxd4#
- 1...e5
- 2.Sxh6#
- 1...e6
- 2.Sxh6#
- 1...Rxd8
- Tries
- 1.Se3+?
- 1...Bxe3
- 2.Qe5#
- 2.g4#
- 1...Kf6!
- 1...Bxe3
- 1.Bxe7?
- threat
- 2.Sxh6#
- 1...Sc2+
- 2.Qxc2#
- 1...Rxe7
- 2.Sxe7#
- 1...Sxf3
- 2.Qxf3#
- 1...Bg7
- 2.Se3#
- 2.Rf4#
- 1...Rh8!
- threat
- 1.Rxd4?
- threat
- 2.Rf4#
- 1...Sc2+
- 2.Qxc2#
- 1...Sxd4
- 2.Sxd4#
- 1...Sg2
- 2.Qc2#
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...e5
- 2.Se3#
- 2.Sxh6#
- 1...b4+!
- threat
- 1.Rxb5+?
- 1...Be5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sc5
- 2.Sxd4#
- 1...e5
- 2.Sxh6#
- 1...Bc5+!
- 1...Be5
- 1.Qxe1?
- threat
- 2.Qb1#
- 2.Qe4#
- 2.Qe6#
- 1...Be3
- 2.Qb1#
- 1...Be5
- 2.Qb1#
- 2.Qe4#
- 2.Qxe5#
- 1...Sa1
- 2.Sxd4#
- 2.Qe4#
- 2.Qe6#
- 1...Sc1
- 2.Sxd4#
- 2.Qe4#
- 2.Qe6#
- 1...Sd2
- 2.Sxd4#
- 2.Qe6#
- 1...Sc5
- 2.Sxd4#
- 1...e5
- 2.Sxh6#
- 2.Qe4#
- 1...e6
- 2.Sxh6#
- 2.Qb1#
- 2.Qe4#
- 1...Bb2+!
- threat
- 1.Qxd4?
- threat
- 2.Se3#
- 2.Sxh6#
- 2.Qe5#
- 2.Qe4#
- 2.Qf4#
- 1...Sxf3
- 2.Se3#
- 2.Sxh6#
- 2.Qd3#
- 2.Qe4#
- 2.Qf4#
- 1...Sxd4
- 2.Sxd4#
- 1...Rh8
- 2.Se3#
- 2.Sxe7#
- 2.Qe5#
- 2.Qe4#
- 2.Qf4#
- 1...Sg2
- 2.Sxh6#
- 2.Qe5#
- 2.Qd3#
- 2.Qe4#
- 1...Sd3
- 2.Se3#
- 2.Sxh6#
- 2.Qxd3#
- 2.Qe4#
- 1...Sd2
- 2.Se3#
- 2.Sxh6#
- 2.Qe5#
- 2.Qf4#
- 1...Sc5
- 2.Se3#
- 2.Sxh6#
- 2.Qe5#
- 2.Qf4#
- 1...e5
- 2.Se3#
- 2.Sxh6#
- 2.Qe4#
- 1...Sc2+!
- threat
- 1.Qc2+?
- 1...Sd3
- 2.Qxd3#
- 1...Sxc2+!
- 1...Sd3
- 1.Qxb3?
- threat
- 2.Sxd4#
- 2.Qe6#
- 1...Sc2+
- 2.Qxc2#
- 1...Rxd8
- 2.Sxe7#
- 2.Qe6#
- 1...Sxf3
- 2.Qe6#
- 2.Qxf3#
- 1...axb3
- 2.Sxd4#
- 1...Ba1
- 2.Rf4#
- 2.Qe6#
- 1...Bg1
- 2.Rf4#
- 2.Qe6#
- 1...Bf2
- 2.Rf4#
- 2.Qe6#
- 1...Bc3
- 2.Rf4#
- 2.Qe6#
- 1...Be3
- 2.Qe6#
- 1...Bc5
- 2.Qe6#
- 1...Be5
- 2.Qe6#
- 1...Bb6
- 2.Rf4#
- 2.Qe6#
- 1...Bf6
- 2.Se3#
- 2.Sxh6#
- 2.Rf4#
- 2.Qe6#
- 1...Ba7
- 2.Rf4#
- 2.Qe6#
- 1...Bg7
- 2.Rf4#
- 2.Qe6#
- 1...Bh8
- 2.Rf4#
- 2.Qe6#
- 1...e5
- 2.Sxh6#
- 1...e6
- 2.Sxh6#
- 2.Sxd4#
- 1...Bb2+!
- threat
- 1.Qc5+?
- 1...Be5
- 2.Rf4#
- 2.Qxe5#
- 1...Sxc5
- 2.Sxd4#
- 1...e5
- 2.Sxh6#
- 1...Bxc5!
- 1...Be5
- 1.hxg5?
- threat
- 2.Sxh6#
- 2.gxh6#
- 2.g6#
- 1...Sc2+
- 2.Qxc2#
- 1...Sxf3
- 2.Qxf3#
- 1...Rg8
- 2.Sxh6#
- 2.Sxe7#
- 2.g6#
- 1...Rh8
- 2.Sxe7#
- 2.gxh6#
- 2.g6#
- 1...Be3
- 2.Sxe3#
- 2.Sxh6#
- 2.Qe5#
- 1...Bf6
- 2.Se3#
- 2.Sxh6#
- 2.Rf4#
- 2.gxf6#
- 1...Bg7
- 2.Se3#
- 2.Rf4#
- 2.gxh6#
- 2.g6#
- 1...hxg5!
- threat
- 1.Se3+?
- Keys
- 1.Rxh6!
- threat
- 2.Be6#
- 1...Sc2+
- 2.Qxc2#
- 1...Sxf3
- 2.Qxf3#
- 1...gxh4
- 2.Rh5#
- 1...Bf6
- 2.Se3#
- 1...Sc5
- 2.Sxd4#
- 1...e5
- 2.Rf6#
- 1...e6
- 2.Bg6#
- threat
- 1.Rxh6!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- R(j);N_GUARD,XB(K)::S(I),XP(i)
- R(j);N_GUARD::S(I),XP(i)
- B(d);OGATE,XQ(B)::R1(E)
- B(d);OGATE::QAR1(B),XB(d)
- S(a);CHECK,N_GUARD::QAB(B),XS(a)
- S(a);N_GUARD::QAB(B),XS(a)
- S(a);OGATE,XP(C)::QAR2(B),XS(a)
- S(b);N_GUARD::S(I),XB(d)
- P(i);::S(F),XP(h)
- Tries
- Try
- S(F);CHECK
- Refutation
- K(f);N_SPINP(g),P-FLIGHT,P_SPINB(d),P_SPINP(i)
- Try
- B(K);XP(i)
- Threat
- S(F),XP(h)
- Vars
- S(a);CHECK,N_GUARD::QAB(B),XS(a)
- R(j);XB(K)::S(I),XR(j)
- S(a);OGATE,XP(C)::QAR2(B),XS(a)
- Refutation
- R(j);
- Try
- R(E);XB(d)
- Threat
- R1(E)
- Vars
- S(a);CHECK,N_GUARD::QAB(B),XS(a)
- S(b);XR(E)::S(I),XS(b)
- S(a);N_GUARD::QAB(B),XS(a)
- Refutation
- P(e);CHECK
- Try
- R(E);CHECK,XP(e)
- Vars
- S(b);P_SPINS(b)::S(I),XB(d)
- P(i);N_SPINP(g),P_SPINP(i)::S(F),XP(h)
- Refutation
- B(d);CHECK,P_SPINB(d)
- Try
- Q(B);XS(a)
- Threat
- DUALS(3)
- Vars
- B(d);::QAB(B)
- S(b);N_GUARD::S(I),XB(d)
- Refutation
- B(d);CHECK
- Try
- Q(B);XB(d)
- Threat
- DUALS(5)
- Vars
- S(b);XQ(B)::S(I),XS(b)
- Refutation
- S(a);CHECK
- Try
- Q(B);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB(B),XS(a)
- Refutation
- S(a);CHECK,XQ(B)
- Try
- Q(B);XS(b)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::QAB(B),XS(a)
- P(c);XQ(B)::S(I),XB(d)
- B(d);::QAB1(B)
- B(d);P_PINR(E)::QAB1(B)
- P(i);::S(F),XP(h)
- Refutation
- B(d);CHECK
- Try
- Q(B);CHECK
- Vars
- S(b);XQ(B)::S(I),XB(d)
- P(i);N_SPINP(g),P_SPINP(i)::S(F),XP(h)
- Refutation
- B(d);P_PINR(E),XQ(B)
- Try
- P(G);XP(g)
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,N_GUARD::QAB(B),XS(a)
- S(a);OGATE,XP(C)::QAR2(B),XS(a)
- Refutation
- P(h);P_SPINP(h),XP(G)
- Try
- Actual
- R(H);N_PINP(g),XP(h)
- Threat
- B(J)
- Vars
- S(a);CHECK,N_GUARD::QAB(B),XS(a)
- S(a);OGATE,XP(C)::QAR2(B),XS(a)
- P(g);OGATEB,XP(G)::R(H)
- B(d);N_GUARD::S(F)
- S(b);N_GUARD::S(I),XB(d)
- P(i);N_GUARD,S_CUTB(d)::R1(H)
- P(i);SBLOCK::B(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).