MESON Chess Problem Database
Problem Display
PID: 57153 (5Q2/3P4/2p1K3/b1N5/P1k1BR2/4q3/PPN5/8 w - - 0 1)
Ellerman, Arnoldo
2nd HM., Brisbane Courier, 1917-1918
#2
10 + 4
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Bd3#
- 2.Bd5#
- 1...Qg1
- 2.Bd3#
- 2.Bd5#
- 1...Qd2
- 2.Bd3#
- 2.Bd5#
- 1...Qf2
- 2.Bd3#
- 2.Bd5#
- 1...Qd4
- 2.Bd3#
- 1...Qxf4
- 2.Bd3#
- 1...Qa3
- 2.Bh1#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 1...Qb3
- 2.Bh1#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 2.axb3#
- 1...Qc3
- 2.Bd3#
- 2.Bd5#
- 1...Qd3
- 2.Bxd3#
- 2.Bd5#
- 1...Qf3
- 2.Bd3#
- 2.Bxf3#
- 2.Bd5#
- 1...Qg3
- 2.Bd3#
- 2.Bd5#
- 1...Qh3+
- 2.Bf5#
- 1...Qxe4+
- 2.Rxe4#
- 1...Bc3
- 2.b3#
- 1...Qc1
- Tries
- 1.Sa3+?
- 1...Kd4
- 2.Qd6#
- 1...Qxa3
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 1...Kb4!
- 1...Kd4
- 1.Sxe3+?
- 1...Kb4
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 2.a3#
- 1...Kd4!
- 1...Kb4
- 1.Sb3?
- threat
- 2.Sa3#
- 2.Sxe3#
- 2.Sxa5#
- 1...Qh3+
- 2.Bf5#
- 1...Qxf4
- 2.Sa3#
- 2.Sxa5#
- 2.Qc5#
- 1...Qxb3
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Qc1
- 2.Sa3#
- 2.Sxa5#
- 2.Qc5#
- 1...Qg1
- 2.Sa3#
- 2.Sxa5#
- 1...Qd2
- 2.Sa3#
- 2.Qc5#
- 1...Qf2
- 2.Sa3#
- 2.Sxa5#
- 1...Qd4
- 2.Sa3#
- 2.Sxa5#
- 1...Qc5
- 2.Qxc5#
- 1...Qb6
- 2.Sa3#
- 1...Qa7
- 2.Sa3#
- 1...Qe1
- 2.Sa3#
- 2.Qc5#
- 1...Qe2
- 2.Sa3#
- 2.Sxa5#
- 2.Qc5#
- 1...Qc3
- 2.Sa3#
- 2.Qc5#
- 1...Qd3
- 2.Sa3#
- 2.Sxa5#
- 2.Bd5#
- 2.Qc5#
- 1...Qf3
- 2.Sa3#
- 2.Sxa5#
- 2.Qc5#
- 1...Qg3
- 2.Sa3#
- 2.Sxa5#
- 2.Qc5#
- 1...Be1
- 2.Sa3#
- 2.Sxe3#
- 1...Bd2
- 2.Sa3#
- 1...Bc3
- 2.Sa3#
- 2.Sxe3#
- 1...Bb4
- 2.Sxe3#
- 2.Qxb4#
- 1...Bb6
- 2.Sa3#
- 2.Qb4#
- 1...Bc7
- 2.Sa3#
- 2.Sxe3#
- 2.Qb4#
- 1...Bd8
- 2.Sa3#
- 2.Sxe3#
- 2.Qb4#
- 1...c5
- 2.Sxa5#
- 1...Qxe4+!
- threat
- 1.Sa3+?
- Keys
- 1.Sd3!
- threat
- 2.Se5#
- 1...Qh3+
- 2.Bf5#
- 1...Qxf4
- 2.Qc5#
- 1...Qxd3
- 2.Bd5#
- 1...Qd4
- 2.Sa3#
- 1...Qc5
- 2.Qxc5#
- 1...Bc3
- 2.b3#
- 1...Bc7
- 2.Qb4#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- Q(a);N_PINB(E)::B(E)
- Q(a);N_PINB(E),XR(F)::B(E)
- Q(a);CHECK,N_PINB(E)::R(F)+B(E)
- Q(a);CHECK,OGATE,P_SPINQ(a),XB(E)::R(F),XQ(a)
- B(c);SBLOCK,S_CUTQ(a)::P(B)
- Tries
- Try
- S(C);CHECK
- Vars
- K(b);P-FLIGHT::QAR2(J)
- Refutation
- K(b);P-FLIGHT
- Try
- S(C);CHECK,N_SPINB(E),XQ(a)
- Refutation
- K(b);P-FLIGHT
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,N_PINB(E)::R(F)+B(E)
- Q(a);N_GUARD,N_PINB(E)::QAR1(J),XQ(a)
- Q(a);N_PINB(E)::S(C)
- B(c);::S(C)
- P(d);::S(G),XB(c)
- Refutation
- Q(a);CHECK,P_SPINQ(a),XB(E)
- Try
- Actual
- S(G);
- Threat
- S(G)
- Vars
- Q(a);CHECK,N_PINB(E)::R(F)+B(E)
- Q(a);N_GUARD,N_PINB(E),XR(F)::QAR1(J)
- Q(a);N_PINB(E),SBLOCK,XS(G)::R(F)+B(E),DCHECK
- Q(a);N_PINB(E),SBLOCK::S(C)
- Q(a);N_GUARD,N_PINB(E)::QAR1(J),XQ(a)
- B(c);SBLOCK::P(B)
- B(c);N_GUARD::QAR1(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).