MESON Chess Problem Database
Problem Display
PID: 3105 (8/2pQp3/1p1b2p1/pn1k1nR1/N1R3N1/P2pP1p1/5pK1/5B2 w - - 0 1)
Harley, Brian
Chess Amateur (The), 1918
#2
9 + 12
| 2681 | All Change Here! | 1919 |
| 934 | Social Chess Quarterly (The) | 1934 |
| 15290 | Harley Scrapbook | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Kxc4
- 2.Qe6#
- 1...Sxa3
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa7
- 2.Rd4#
- 1...d2
- 2.e4#
- 1...c5
- 2.Sxb6#
- 1...c6
- 2.Sxb6#
- 1...e5
- 2.Qf7#
- 1...e6
- 2.Qc6#
- 1...Kxc4
- Tries
- 1.Kh1?
- 1...Kxc4
- 2.Qe6#
- 1...Sxa3
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sc3
- 2.Rd4#
- 1...Sa7
- 2.Rd4#
- 1...d2
- 2.e4#
- 1...c5
- 2.Sxb6#
- 1...c6
- 2.Sxb6#
- 1...e5
- 2.Qf7#
- 1...e6
- 2.Qc6#
- 1...g2+!
- 1...Kxc4
- 1.Kf3?
- 1...Sd4+
- 2.Rxd4#
- 1...Kxc4
- 2.Qe6#
- 1...Sxa3
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sa7
- 2.Rd4#
- 1...d2
- 2.e4#
- 1...c5
- 2.Sxb6#
- 1...c6
- 2.Sxb6#
- 1...e5
- 2.Qf7#
- 1...e6
- 2.Qc6#
- 1...g2!
- 1...Sd4+
- 1.Kh3?
- 1...Kxc4
- 2.Qe6#
- 1...Sxa3
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sc3
- 2.Rd4#
- 1...Sa7
- 2.Rd4#
- 1...d2
- 2.e4#
- 1...c5
- 2.Sxb6#
- 1...c6
- 2.Sxb6#
- 1...e5
- 2.Qf7#
- 1...e6
- 2.Qc6#
- 1...g2!
- 1...Kxc4
- 1.Rb4?
- threat
- 2.e4#
- 1...Sd4
- 2.Rxd4#
- 1...Sc3
- 2.Rd4#
- 1...axb4!
- threat
- 1.Rc5+?
- 1...Ke4
- 2.Qc6#
- 1...bxc5!
- 1...Ke4
- 1.Rxf5+?
- 1...Kxc4
- 2.Qxb5#
- 2.Qe6#
- 1...e5
- 2.Qf7#
- 1...gxf5!
- 1...Kxc4
- 1.Kh1?
- Keys
- 1.Re4!
- 1...Kxe4
- 2.Qc6#
- 1...Sxa3
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sc3
- 2.Rd4#
- 1...Sa7
- 2.Rd4#
- 1...d2
- 2.Re5#
- 1...c5
- 2.Qb7#
- 1...c6
- 2.Qe6#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Kxe4
- 1.Re4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(f);N_SPINB(i),N_SPINS(g),P_SPINP(b),S_FLIGHT,XR(F)::QAB(I)
- S(e);N_GUARD,XP(C)::R1(F)
- S(e);N_GUARD::R1(F)
- S(e);N_GUARD::R1(F),XS(e)
- P(b);::P(D)
- P(k);N_GUARD::S(E),XP(h)
- P(l);N_SPINS(g),OGATE::QAB(I)
- P(l);SBLOCK::QAB1(I)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- K(f);N_SPINB(i),N_SPINS(g),P_SPINP(b),S_FLIGHT,XR(F)::QAB(I)
- S(e);N_GUARD,XP(C)::R1(F)
- S(e);N_GUARD::R1(F),XS(e)
- S(e);N_GUARD::R1(F)
- P(b);::P(D)
- P(k);N_GUARD::S(E),XP(h)
- P(l);N_SPINS(g),OGATE::QAB(I)
- P(l);SBLOCK::QAB1(I)
- Refutation
- P(c);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- S(e);CHECK,N_GUARD::R1(F),XS(e)
- K(f);N_SPINB(i),N_SPINS(g),P_SPINP(b),S_FLIGHT,XR(F)::QAB(I)
- S(e);N_GUARD,XP(C)::R1(F)
- S(e);N_GUARD::R1(F)
- P(b);::P(D)
- P(k);N_GUARD::S(E),XP(h)
- P(l);N_SPINS(g),OGATE::QAB(I)
- P(l);SBLOCK::QAB1(I)
- Refutation
- P(c);
- Try
- K(B);S_FLIGHT
- Vars
- K(f);N_SPINB(i),N_SPINS(g),P_SPINP(b),S_FLIGHT,XR(F)::QAB(I)
- S(e);N_GUARD,XP(C)::R1(F)
- S(e);N_GUARD::R1(F),XS(e)
- S(e);N_GUARD::R1(F)
- P(b);::P(D)
- P(k);N_GUARD::S(E),XP(h)
- P(l);N_SPINS(g),OGATE::QAB(I)
- P(l);SBLOCK::QAB1(I)
- Refutation
- P(c);
- Try
- R(F);
- Threat
- P(D)
- Vars
- S(e);N_GUARD::R1(F),XS(e)
- S(e);N_GUARD::R1(F)
- Refutation
- P(d);XR(F)
- Try
- R(F);CHECK
- Vars
- K(f);N_SPINB(i),N_SPINS(g),S_FLIGHT::QAB(I)
- Refutation
- P(h);XR(F)
- Try
- R(H);CHECK,XS(g)
- Vars
- P(l);OGATE,P_SPINP(l)::QAB(I)
- Refutation
- P(j);XR(H)
- Try
- Actual
- R(F);
- Vars
- K(f);N_SPINB(i),N_SPINS(g),S_FLIGHT,XR(F)::QAB(I)
- S(e);N_GUARD,XP(C)::R1(F)
- S(e);N_GUARD::R1(F),XS(e)
- S(e);N_GUARD::R1(F)
- P(b);::R1(F)
- P(k);OGATE::QAB(I)
- P(k);SBLOCK::QAB1(I)
- P(l);N_GUARD,N_SPINS(g)::S(G)
- P(l);N_GUARD::S(G)
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).