MESON Chess Problem Database
Problem Display
PID: 258898 (5R2/2N2pr1/2PPPk2/K3Nq1p/b2BPnQP/6n1/8/5R2 w - - 0 1)
Ellerman, Arnoldo
Western Morning News, 1922
(First published on Sat Jan 14 1922)
#2
12 + 8
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4
- 2.Sd7#
- 2.Se8#
- 1...Qxe6
- 2.Sd7#
- 2.Qxe6#
- 1...Qg6
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sxg6#
- 2.Sd7#
- 2.Sxf7#
- 2.Sd5#
- 2.Se8#
- 1...Qh7
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 2.Sd5#
- 2.Se8#
- 1...Qxe5+
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 2.Se8#
- 1...Rxg4
- 2.Rxf7#
- 1...Rg5
- 2.Rxf7#
- 1...Rg6
- 2.Rxf7#
- 1...Rg8
- 2.Rxf7#
- 1...Bb5
- 2.Sd7#
- 1...Sxf1
- 2.Qxf5#
- 1...Sh1
- 2.Qxf5#
- 1...Sge2
- 2.Qxf5#
- 1...Sd5
- 2.Sd3#
- 2.Sc4#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 1...Sxe6
- 2.Sd5#
- 2.Se8#
- 1...Sg6
- 2.Qg5#
- 1...Qxe4
- Tries
- 1.Qg5+?
- 1...Rxg5
- 2.Rxf7#
- 1...Qxg5!
- 1...Rxg5
- 1.Qg6+?
- 1...Qxg6
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sg4#
- 2.Sd7#
- 2.Sxf7#
- 1...Rxg6
- 2.Rxf7#
- 1...Sxg6!
- 1...Qxg6
- 1.exf5?
- threat
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 2.Se8#
- 1...Rxg4
- 2.Rxf7#
- 1...Bxc6
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 1...Sxf5
- 2.Sd7#
- 1...Sxe6
- 2.Sd7#
- 2.Sd5#
- 2.Se8#
- 1...Rg6
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sxg6#
- 2.Sd7#
- 2.Sxf7#
- 2.Se8#
- 2.Rxf7#
- 1...Sge2
- 2.Sd7#
- 2.Se8#
- 1...Sfe2
- 2.Sd7#
- 2.Sd5#
- 2.Se8#
- 1...Sd3
- 2.Sxd3#
- 2.Sd7#
- 2.Sd5#
- 2.Se8#
- 1...Sg6
- 2.Sxg6#
- 2.Sd7#
- 2.Sd5#
- 2.Se8#
- 2.Qg5#
- 1...hxg4!
- threat
- 1.e7?
- threat
- 2.e8S#
- 1...Qxe5+
- 2.Sd5#
- 1...Qe6
- 2.Sd7#
- 2.Se8#
- 2.Qxe6#
- 1...Qd7
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sg6#
- 2.Sxd7#
- 2.Sxf7#
- 2.Sd5#
- 1...Qc8
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 2.Sd5#
- 1...Bxc6!
- threat
- 1.Qg5+?
- Keys
- 1.d7!
- threat
- 2.d8Q#
- 2.d8B#
- 1...Qxe5+
- 2.Sd5#
- 1...Ke7
- 2.d8Q#
- 1...Qxe4
- 2.d8Q#
- 2.d8B#
- 1...Qxg4
- 2.d8Q#
- 2.d8B#
- 1...Qxe6
- 2.Qxe6#
- 1...Rxg4
- 2.Rxf7#
- 1...Bxc6
- 2.d8Q#
- 2.d8B#
- 1...Sxf1
- 2.d8Q#
- 2.d8B#
- 1...Sxe4
- 2.d8Q#
- 2.d8B#
- 1...Sxe6
- 2.Sd5#
- 1...hxg4
- 2.d8Q#
- 2.d8B#
- 1...Rg5
- 2.Rxf7#
- 1...Rg6
- 2.Rxf7#
- 1...Qg6
- 2.Sxg6#
- 2.Sd5#
- 2.d8Q#
- 2.d8B#
- 1...Qh7
- 2.Sg6#
- 2.Sd5#
- 2.d8Q#
- 2.d8B#
- 1...Qg5
- 2.Sd5#
- 2.d8Q#
- 2.d8B#
- 1...Rh7
- 2.d8Q#
- 2.d8B#
- 1...Rg8
- 2.Rxf7#
- 2.d8Q#
- 2.d8B#
- 1...Bd1
- 2.d8Q#
- 2.d8B#
- 1...Bc2
- 2.d8Q#
- 2.d8B#
- 1...Bb3
- 2.d8Q#
- 2.d8B#
- 1...Bb5
- 2.d8Q#
- 2.d8B#
- 1...Sh1
- 2.d8Q#
- 2.d8B#
- 1...Sge2
- 2.d8Q#
- 2.d8B#
- 1...Sfe2
- 2.d8Q#
- 2.d8B#
- 1...Sg2
- 2.d8Q#
- 2.d8B#
- 1...Sd3
- 2.d8Q#
- 2.d8B#
- 1...Sh3
- 2.d8Q#
- 2.d8B#
- 1...Sd5
- 2.Sg6#
- 1...Sg6
- 2.Qg5#
- threat
- 1.d7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(d);CHECK,P_SPINQ(d),P_SPINS(c),XS(G)::S(K)
- R(h);N_GUARD,XQ(D)::R1(L),XP(g)
- R(h);N_GUARD::R1(L),XP(g)
- B(b);N_PINS(G)::B(B)+S(G),DCHECK
- S(a);N_GUARD,XR(A)::QAR1(D),XQ(d)
- S(a);N_GUARD::QAR1(D),XQ(d)
- S(c);P_SPINQ(d),S_CUTR(h)::QAB1(D)
- Tries
- Try
- Q(D);CHECK
- Vars
- R(h);XQ(D)::R1(L),XP(g)
- Refutation
- Q(d);P_SPINS(c),XQ(D)
- Try
- Q(D);CHECK
- Vars
- R(h);XQ(D)::R1(L),XP(g)
- Refutation
- S(c);P_SPINQ(d),XQ(D)
- Try
- P(C);N_SPINS(G),XQ(d)
- Threat
- DUALS(7)
- Vars
- R(h);N_GUARD,XQ(D)::R1(L),XP(g)
- S(a);XP(C)::B(B)+S(G),DCHECK
- Refutation
- P(e);XQ(D)
- Try
- P(J);
- Threat
- P=S
- Vars
- Q(d);CHECK,P_SPINQ(d),P_SPINS(c),XS(G)::S(K)
- Refutation
- B(b);XP(H)
- Try
- Actual
- P(I);
- Threat
- P=Q
- Vars
- Q(d);CHECK,P_SPINQ(d),P_SPINS(c),XS(G)::S(K)
- K(f);N_SPINP(g),S_FLIGHT::P=Q
- Q(d);N_PINS(G),P_SPINS(c),XP(C)::P=Q
- Q(d);N_PINS(G),P_SPINS(c),XQ(D)::P=Q
- Q(d);N_PINS(G),OGATE,P_SPINS(c),XP(J)::QAR1(D),XQ(d)
- R(h);N_GUARD,XQ(D)::R1(L),XP(g)
- B(b);XP(H)::P=Q
- S(a);XR(A)::P=Q
- S(a);XP(C)::P=Q
- S(c);N_GUARD,P_SPINQ(d),SBLOCK,XP(J)::S(K)
- P(e);XQ(D)::P=Q
- R(h);N_GUARD::R1(L),XP(g)
- R(h);::P=Q
- B(b);::P=Q
- B(b);N_PINS(G)::P=Q
- S(a);::P=Q
- S(c);P_SPINQ(d)::P=Q
- S(c);N_PINS(G),P_SPINQ(d)::B(B)+S(G)
- S(c);P_SPINQ(d),S_CUTR(h)::QAB1(D)
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).