MESON Chess Problem Database
Problem Display
PID: 57314 (1B3K2/5R1Q/1N2k3/6pn/1pp1p3/1r2r1R1/B2P4/1b3q2 w - - 0 1)
Ellerman, Arnoldo
1st HM., Brisbane Courier, 1918-1919
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Qe2
- 2.Qf5#
- 1...Qg2
- 2.Qf5#
- 1...Qd3
- 2.Qf5#
- 1...Qc1
- 2.Qf5#
- 1...Qd1
- 2.Qf5#
- 1...Qe1
- 2.Qf5#
- 1...Qg1
- 2.Qf5#
- 1...Qh1
- 2.Qf5#
- 1...Qf5
- 2.Qxf5#
- 1...Qxf7+
- 2.Qxf7#
- 1...Rd3
- 2.Qxe4#
- 1...Sf4
- 2.Qf5#
- 1...Sf6
- 2.Re7#
- 1...Qe2
- Tries
- 1.Rxf1?
- threat
- 2.Qf5#
- 2.Qg8#
- 2.Qd7#
- 2.Qe7#
- 2.Qf7#
- 1...Sxg3
- 2.Qg6#
- 2.Qg8#
- 2.Qh6#
- 2.Qd7#
- 2.Qe7#
- 2.Qf7#
- 1...Sf4
- 2.Qf7#
- 1...Rbd3
- 2.Qf5#
- 2.Qg8#
- 2.Qe7#
- 2.Qf7#
- 1...Red3
- 2.Qxe4#
- 2.Qf5#
- 2.Qg8#
- 2.Qe7#
- 2.Qf7#
- 1...Sf6
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 1...Sg7
- 2.Qg6#
- 2.Qg8#
- 2.Qh6#
- 1...Rf3+!
- threat
- 1.Rf4?
- threat
- 2.Qf5#
- 2.Qg8#
- 2.Qd7#
- 2.Qe7#
- 2.Qf7#
- 1...Sxg3
- 2.Qg6#
- 2.Qg8#
- 2.Qh6#
- 2.Qd7#
- 2.Qe7#
- 2.Qf7#
- 1...Sxf4
- 2.Qf7#
- 1...gxf4
- 2.Qf7#
- 1...Qh3
- 2.Qg8#
- 2.Qd7#
- 2.Qe7#
- 2.Qf7#
- 1...Qd3
- 2.Qf5#
- 2.Qg8#
- 2.Qe7#
- 2.Qf7#
- 1...Rbd3
- 2.Qf5#
- 2.Qg8#
- 2.Qe7#
- 2.Qf7#
- 1...Red3
- 2.Qxe4#
- 2.Qf5#
- 2.Qg8#
- 2.Qe7#
- 2.Qf7#
- 1...Sf6
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 1...Sg7
- 2.Qg6#
- 2.Qg8#
- 2.Qh6#
- 1...Qxf4+!
- threat
- 1.Rf5?
- threat
- 2.Qd7#
- 2.Qf7#
- 1...Qd3
- 2.Qf7#
- 1...Rbd3
- 2.Qf7#
- 1...Red3
- 2.Qf7#
- 1...Sf6
- 2.Re5#
- 1...Sg7
- 2.Qg6#
- 1...Qxf5+!
- threat
- 1.Qg6+?
- 1...Sf6
- 2.Re7#
- 1...Qf6!
- 1...Sf6
- 1.Rxf1?
- Keys
- 1.d4!
- threat
- 2.d5#
- 1...Qxf7+
- 2.Qxf7#
- 1...cxd4 ep
- 2.Bxb3#
- 1...exd4 ep
- 2.Rxe3#
- 1...Qd3
- 2.Qf5#
- 1...Qd1
- 2.Qf5#
- 1...Qf5
- 2.Qxf5#
- 1...Rbd3
- 2.Bxc4#
- 1...Red3
- 2.Qxe4#
- 1...Sf4
- 2.Qf5#
- 1...Sf6
- 2.Re7#
- threat
- 1.d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(b);N_GUARD,N_PINR(E)::QAB1(F)
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);CHECK,OGATE,XR(E)::QAB1(F),XQ(b)
- R(d);N_GUARD,S_CUTB(a)::QAR2(F),XP(g)
- S(i);N_PINR(E),S_CUTQ(b)::QAB1(F)
- S(i);N_PINR(E),SBLOCK::R1(E)
- Tries
- Try
- R(E);N_SPINR(E),XQ(b)
- Threat
- DUALS(5)
- Vars
- S(i);::QAB1(F)
- Refutation
- R(d);CHECK
- Try
- R(E);
- Threat
- DUALS(5)
- Vars
- S(i);XR(E)::QAB1(F)
- P(h);XR(E)::QAB1(F)
- Refutation
- Q(b);CHECK,XR(E)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(b);N_PINR(E)::QAB1(F)
- R(c);P_SPINP(f)::QAB1(F)
- R(d);::QAB1(F)
- S(i);N_PINR(E),SBLOCK::R1(E)
- S(i);N_GUARD::QAR2(F)
- Refutation
- Q(b);CHECK,XR(E)
- Try
- Q(F);CHECK
- Vars
- S(i);N_PINR(E),P_SPINS(i)::R1(E)
- Refutation
- Q(b);P_SPINQ(b)
- Try
- Actual
- P(B);
- Threat
- P(B)
- Vars
- Q(b);CHECK,OGATE,XR(E)::QAB1(F),XQ(b)
- P(f);EP,OGATEB,P_SPINR(c),XP(B)::B(A),XR(c)
- P(g);EP,OGATEB,XP(B)::R(C),XR(d)
- Q(b);N_GUARD,N_PINR(E)::QAB1(F)
- Q(b);N_GUARD::QAB1(F),XQ(b)
- R(c);OGATE,P_SPINP(f)::B(A),XP(f)
- R(d);N_GUARD,S_CUTB(a)::QAR2(F),XP(g)
- S(i);N_PINR(E),S_CUTQ(b)::QAB1(F)
- S(i);N_PINR(E),SBLOCK::R1(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).