MESON Chess Problem Database
Problem Display
PID: 60159 (5N2/1n1PBR1p/8/2p1k2P/3ppp2/KB3Q1r/4Rp1b/1b2rqNn w - - 0 1)
Fontana, Don A
2nd Highly Comm., Brisbane Courier, 1929
#2
10 + 14
SOLUTION
- SOUND
- Sets
- 1...Rxf3
- 2.Sxf3#
- 1...Rg3
- 2.Qxf4#
- 1...Rxh5
- 2.Qxh5#
- 1...Ba2
- 2.Qxe4#
- 1...Bxg1
- 2.Qxf4#
- 1...Sg3
- 2.Qxf4#
- 1...d3
- 2.Qxe4#
- 1...e3
- 2.Qd5#
- 1...h6
- 2.Sg6#
- 1...Rxf3
- Tries
- 1.Bf6+?
- 1...Kf5
- 2.Be6#
- 1...Kd6!
- 1...Kf5
- 1.Qg4?
- threat
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 2.Qg5#
- 2.Qg7#
- 1...Qxg1
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...Rxh5
- 2.Sf3#
- 2.Qxh5#
- 2.Qe6#
- 2.Qg7#
- 1...fxg1Q
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...fxg1R
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...d3
- 2.Qg7#
- 1...e3
- 2.Qe6#
- 1...c4
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 2.Qg5#
- 1...Qg2
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...Rg3
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 2.Qxf4#
- 1...Sg3
- 2.Sf3#
- 2.Qe6#
- 2.Qxf4#
- 2.Qg7#
- 1...Sd6
- 2.Bf6#
- 2.Qe6#
- 2.Qg7#
- 1...Sd8
- 2.Rf5#
- 2.Qf5#
- 2.Qg5#
- 2.Qg7#
- 1...h6
- 2.Sg6#
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 2.Qg7#
- 1...Rxb3+!
- threat
- 1.Qxh3?
- threat
- 2.Sf3#
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...Qxe2
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...Qxg1
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...Rxe2
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...Bxg1
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...fxg1Q
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...fxg1S
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...fxg1B
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...fxg1R
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...d3
- 2.Sf3#
- 1...e3
- 2.Qe6#
- 1...c4
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...Qg2
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...Sg3
- 2.Sf3#
- 2.Qe6#
- 1...Sd6
- 2.Sf3#
- 2.Bf6#
- 2.Qe6#
- 1...Sd8
- 2.Sf3#
- 2.Rf5#
- 2.Qf5#
- 1...f3
- 2.Sxf3#
- 2.Rf5#
- 2.Qf5#
- 2.Qe6#
- 1...Qxh3!
- threat
- 1.d8Q?
- threat
- 2.Sd7#
- 2.Qd5#
- 1...Sxd8
- 2.Sd7#
- 1...Sd6
- 2.Sd7#
- 2.Bxd6#
- 2.Qxd6#
- 1...d3
- 2.Qxe4#
- 2.Qd5#
- 1...c4!
- threat
- 1.d8S?
- threat
- 2.Sc6#
- 2.Sd7#
- 1...Sxd8
- 2.Sd7#
- 1...d3
- 2.Sc6#
- 2.Qxe4#
- 1...Sa5
- 2.Sd7#
- 1...c4!
- threat
- 1.d8B?
- threat
- 2.Sd7#
- 1...d3
- 2.Qxe4#
- 1...c4!
- threat
- 1.d8R?
- threat
- 2.Sd7#
- 2.Rd5#
- 1...Sxd8
- 2.Sd7#
- 1...Sd6
- 2.Sd7#
- 2.Bxd6#
- 1...d3
- 2.Rd5#
- 2.Qxe4#
- 1...c4!
- threat
- 1.Bf6+?
- Keys
- 1.Be6!
- threat
- 2.Rf5#
- 1...Rxf3+
- 2.Sxf3#
- 1...Rxh5
- 2.Qxh5#
- 1...d3
- 2.Qxe4#
- 1...Sg3
- 2.Qxf4#
- 1...Sd6
- 2.Bf6#
- 1...e3
- 2.Qd5#
- threat
- 1.Be6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(g);P_PINB(D),XQ(E)::S(A),XR(g)
- R(g);S_CUTB(f)::QAB1(E),XP(j)
- R(g);OGATE,XP(F)::QAR(E),XR(g)
- B(a);N_GUARD::QAR1(E),XP(i)
- B(f);N_GUARD,XS(A)::QAB1(E),XP(j)
- S(d);S_CUTB(f)::QAB1(E),XP(j)
- P(h);S_CUTB(a)::QAR1(E),XP(i)
- P(i);OGATE::QAR1(E)
- P(n);N_GUARD::S(J)
- Tries
- Try
- B(H);CHECK
- Vars
- K(l);N_SPINP(i),P-FLIGHT,P_SPINP(j)::B(D)
- Refutation
- K(l);N_SPINP(i),S_FLIGHT
- Try
- Q(E);P_SPINB(D)
- Threat
- DUALS(5)
- Vars
- P(h);N_PINB(D)::QAB(E)
- P(i);N_PINB(D)::QAR1(E)
- Refutation
- R(g);CHECK,XB(D)
- Try
- Q(E);XR(g)
- Threat
- DUALS(4)
- Vars
- P(h);::S(A)
- P(i);::QAR1(E)
- Refutation
- Q(c);P_PINB(D),XQ(E)
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- S(m);XQ(G)::S(J)
- Refutation
- P(k);
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- S(m);XS(G)::S(J)
- S(m);::S(J)
- Refutation
- P(k);
- Try
- P(G);
- Threat
- S(J)
- Vars
- P(h);S_CUTB(a)::QAR1(E),XP(i)
- Refutation
- P(k);
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- S(m);XR(G)::S(J)
- Refutation
- P(k);
- Try
- Actual
- B(D);P_SPINQ(E)
- Threat
- R1(I)
- Vars
- R(g);CHECK,XQ(E)::S(A),XR(g)
- R(g);N_PINQ(E),XP(F)::QAR(E),XR(g)
- P(h);N_PINQ(E)::QAR1(E),XP(i)
- S(d);N_PINQ(E)::QAB1(E),XP(j)
- S(m);SBLOCK::B(H)
- P(i);N_PINQ(E)::QAR1(E)
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).