MESON Chess Problem Database
Problem Display
PID: 55928 (2n1q3/4krPR/p4p1K/B1N3P1/2NQP3/8/8/8 w - - 0 1)
Pirnie, Duncan
1st Comm., Brisbane Courier, 1913
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Qd8#
- 1...Qb5
- 2.Qd8#
- 1...Qc6
- 2.Qd8#
- 1...Qd7
- 2.Qxd7#
- 1...Qd8
- 2.Qxd8#
- 1...Qf8
- 2.Qd7#
- 1...Qg8
- 2.Qd7#
- 1...Qh8
- 2.Qd7#
- 1...Rxg7
- 2.Qxf6#
- 1...Rf8
- 2.g8S#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...fxg5
- 2.Qe5#
- 1...f5
- 2.Qe5#
- 1...Qa4
- Tries
- 1.Se5?
- threat
- 2.Sg6#
- 1...fxe5
- 2.Qxe5#
- 1...Qa4
- 2.Qd8#
- 1...Qb5
- 2.Qd8#
- 1...Qc6
- 2.Qd8#
- 1...Qd7
- 2.Qxd7#
- 1...Qd8
- 2.Qxd8#
- 1...Qf8
- 2.Qd7#
- 1...Qg8
- 2.Qd7#
- 1...Qh8
- 2.Qd7#
- 1...Rf8
- 2.g8S#
- 1...Rxg7!
- threat
- 1.Bb6?
- 1...Rxg7
- 2.Qxf6#
- 1...Sxb6
- 2.Qd6#
- 1...fxg5
- 2.Qe5#
- 1...Qa4
- 2.Qd8#
- 1...Qb5
- 2.Qd8#
- 1...Qc6
- 2.Qd8#
- 1...Qd7
- 2.Qxd7#
- 1...Qd8
- 2.Qxd8#
- 1...Qf8
- 2.Qd7#
- 1...Qg8
- 2.Qd7#
- 1...Qh8
- 2.Qd7#
- 1...Rf8
- 2.g8S#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...f5
- 2.Qe5#
- 1...a5!
- 1...Rxg7
- 1.Bc7?
- 1...Rxg7
- 2.Qxf6#
- 1...fxg5
- 2.Qe5#
- 1...Qa4
- 2.Qd8#
- 1...Qb5
- 2.Qd8#
- 1...Qc6
- 2.Qd8#
- 1...Qd7
- 2.Qxd7#
- 1...Qd8
- 2.Qxd8#
- 1...Qf8
- 2.Qd7#
- 1...Qg8
- 2.Qd7#
- 1...Qh8
- 2.Qd7#
- 1...Rf8
- 2.g8S#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...f5
- 2.Qe5#
- 1...a5!
- 1...Rxg7
- 1.Qd5?
- threat
- 2.Qe6#
- 1...Qc6
- 2.Qd8#
- 1...Qd7
- 2.Qxd7#
- 1...Sb6
- 2.Qd6#
- 1...Rxg7!
- threat
- 1.g6?
- 1...Qa4
- 2.Qd8#
- 1...Qb5
- 2.Qd8#
- 1...Qc6
- 2.Qd8#
- 1...Qd7
- 2.Qxd7#
- 1...Qd8
- 2.Qxd8#
- 1...Qf8
- 2.Qd7#
- 1...Qg8
- 2.Qd7#
- 1...Qh8
- 2.Qd7#
- 1...Sb6
- 2.Qd6#
- 1...Rf8
- 2.g8S#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...f5
- 2.Qe5#
- 1...Rxg7!
- 1...Qa4
- 1.Se5?
- Keys
- 1.Se3!
- threat
- 2.Sf5#
- 1...Rxg7
- 2.Qxf6#
- 1...fxg5
- 2.Qe5#
- 1...Qa4
- 2.Qd8#
- 1...Qb5
- 2.Qd8#
- 1...Qc6
- 2.Qd8#
- 1...Qd7
- 2.Qxd7#
- 1...Qd8
- 2.Qxd8#
- 1...Qf8
- 2.Qd7#
- 1...Qg8
- 2.Qd7#
- 1...Qh8
- 2.Qd7#
- 1...Rf8
- 2.g8S#
- 1...Sd6
- 2.Sd5#
- 1...f5
- 2.Qe5#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- Q(f);N_GUARD::QAB1(B)
- Q(f);N_GUARD::QAR1(B),XQ(f)
- Q(f);N_GUARD::QAB1(B),XQ(f)
- Q(f);N_GUARD,P_PINP(H)::QAR1(B)
- Q(f);N_GUARD::QAR1(B)
- Q(f);N_GUARD,P_PINR(I)::QAR1(B)
- R(d);N_GUARD,P_SPINR(d),XP(H)::QAB1(B),XP(b)
- R(d);SBLOCK::P=S
- S(e);N_GUARD::QAB1(B)
- S(e);N_GUARD::QAB1(B),XS(e)
- P(b);N_GUARD,XP(F)::QAR2(B)
- P(b);N_GUARD::QAR2(B)
- Tries
- Try
- S(A);
- Threat
- S(A)
- Vars
- P(b);OGATE,XS(A)::QAR2(B),XP(b)
- Q(f);N_GUARD::QAB1(B)
- Q(f);N_GUARD::QAR1(B),XQ(f)
- Q(f);N_GUARD::QAB1(B),XQ(f)
- Q(f);N_GUARD,P_PINP(H)::QAR1(B)
- Q(f);N_GUARD::QAR1(B)
- Q(f);N_GUARD,P_PINR(I)::QAR1(B)
- R(d);SBLOCK::P=S
- Refutation
- R(d);P_SPINR(d),XP(H)
- Try
- B(D);
- Vars
- R(d);N_GUARD,P_SPINR(d),XP(H)::QAB1(B),XP(b)
- S(e);N_GUARD,XB(D)::QAB1(B)
- P(b);N_GUARD,XP(F)::QAR2(B)
- Q(f);N_GUARD::QAB1(B)
- Q(f);N_GUARD::QAR1(B),XQ(f)
- Q(f);N_GUARD::QAB1(B),XQ(f)
- Q(f);N_GUARD,P_PINP(H)::QAR1(B)
- Q(f);N_GUARD::QAR1(B)
- Q(f);N_GUARD,P_PINR(I)::QAR1(B)
- R(d);SBLOCK::P=S
- S(e);N_GUARD::QAB1(B),XS(e)
- S(e);N_GUARD::QAB1(B)
- P(b);N_GUARD::QAR2(B)
- Refutation
- P(a);
- Try
- B(D);
- Vars
- R(d);N_GUARD,P_SPINR(d),XP(H)::QAB1(B),XP(b)
- P(b);N_GUARD,XP(F)::QAR2(B)
- Q(f);N_GUARD::QAB1(B)
- Q(f);N_GUARD::QAR1(B),XQ(f)
- Q(f);N_GUARD::QAB1(B),XQ(f)
- Q(f);N_GUARD,P_PINP(H)::QAR1(B)
- Q(f);N_GUARD::QAR1(B)
- Q(f);N_GUARD,P_PINR(I)::QAR1(B)
- R(d);SBLOCK::P=S
- S(e);N_GUARD::QAB1(B)
- S(e);N_GUARD::QAB1(B),XS(e)
- P(b);N_GUARD::QAR2(B)
- Refutation
- P(a);
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- Q(f);N_GUARD::QAB1(B)
- Q(f);N_GUARD::QAR1(B),XQ(f)
- S(e);N_GUARD::QAB1(B)
- Refutation
- R(d);P_SPINR(d),XP(H)
- Try
- P(F);
- Vars
- Q(f);N_GUARD::QAB1(B)
- Q(f);N_GUARD::QAR1(B),XQ(f)
- Q(f);N_GUARD::QAB1(B),XQ(f)
- Q(f);N_GUARD,P_PINP(H)::QAR1(B)
- Q(f);N_GUARD::QAR1(B)
- Q(f);N_GUARD,P_PINR(I)::QAR1(B)
- S(e);N_GUARD::QAB1(B)
- R(d);SBLOCK::P=S
- S(e);N_GUARD::QAB1(B),XS(e)
- P(b);N_GUARD::QAR2(B)
- Refutation
- R(d);P_SPINR(d),XP(H)
- Try
- Actual
- S(A);
- Threat
- S(A)
- Vars
- R(d);N_GUARD,P_SPINR(d),XP(H)::QAB1(B),XP(b)
- P(b);N_GUARD,XP(F)::QAR2(B)
- Q(f);N_GUARD::QAB1(B)
- Q(f);N_GUARD::QAR1(B),XQ(f)
- Q(f);N_GUARD::QAB1(B),XQ(f)
- Q(f);N_GUARD,P_PINP(H)::QAR1(B)
- Q(f);N_GUARD::QAR1(B)
- Q(f);N_GUARD,P_PINR(I)::QAR1(B)
- R(d);SBLOCK::P=S
- S(e);SBLOCK::S(A)
- P(b);N_GUARD::QAR2(B)
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).