MESON Chess Problem Database
Problem Display
PID: 64334 (3R2BB/1pr1pR2/7Q/3b4/PPkN1r1p/Pp3p1K/1P5n/4N3 w - - 0 1)
Ellerman, Arnoldo
Chess, 1946
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxd4
- 2.Qc1#
- 1...Re4
- 2.Qc1#
- 1...Rg4
- 2.Qc1#
- 1...Rf5
- 2.Qc1#
- 1...Rxf7
- 2.Qc1#
- 1...Be6+
- 2.Qxe6#
- 1...Rxd4
- Tries
- 1.Se2?
- threat
- 2.Rxf4#
- 1...Be6+
- 2.Qxe6#
- 1...Rxf7
- 2.Qc1#
- 1...Bxf7
- 2.Qxf4#
- 1...Rd4
- 2.Qc1#
- 1...Re4
- 2.Qc1#
- 1...Rg4
- 2.Qc1#
- 1...Rf5
- 2.Qc1#
- 1...Rf6
- 2.Qc1#
- 1...Be4
- 2.Rd4#
- 1...e5
- 2.Rxc7#
- 1...e6!
- threat
- 1.Sc6?
- threat
- 2.Sa5#
- 2.Rxf4#
- 1...Be6+
- 2.Qxe6#
- 1...Rxf7
- 2.Sa5#
- 2.Qc1#
- 1...Rxc6
- 2.Rxf4#
- 1...Bxc6
- 2.Rxf4#
- 1...Bxf7
- 2.Sa5#
- 2.Se5#
- 2.Qxf4#
- 1...bxc6
- 2.Rxf4#
- 1...Rd4
- 2.Sa5#
- 2.Se5#
- 2.Qc1#
- 1...Re4
- 2.Sa5#
- 2.Qc1#
- 1...Rg4
- 2.Sa5#
- 2.Qc1#
- 1...Rf5
- 2.Sa5#
- 2.Qc1#
- 1...Rf6
- 2.Qc1#
- 1...Be4
- 2.Sa5#
- 2.Se5#
- 2.Rd4#
- 1...b6
- 2.Rxf4#
- 1...e6
- 2.Sa5#
- 1...e5!
- threat
- 1.Rxf4?
- threat
- 2.Sdc2#
- 2.Se2#
- 2.Sdxf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Bxd5#
- 1...Be6+
- 2.Sf5#
- 2.Sxe6#
- 2.Bxe6#
- 2.Qxe6#
- 1...Bxg8
- 2.Sdc2#
- 2.Se2#
- 2.Sdxf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...Rc5
- 2.Sdc2#
- 2.Se2#
- 2.Sdxf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 1...Rc6
- 2.Sdc2#
- 2.Se2#
- 2.Sdxf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sxc6#
- 2.Bxd5#
- 1...Rd7
- 2.Sdc2#
- 2.Se2#
- 2.Sdxf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 1...Bf7
- 2.Sdc2#
- 2.Se2#
- 2.Sdxf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...f2
- 2.Sdc2#
- 2.Se2#
- 2.Sdf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Bxd5#
- 1...b5
- 2.Sdc2#
- 2.Se2#
- 2.Sdxf3#
- 2.Sxb5#
- 2.Sf5#
- 2.Sc6#
- 2.Bxd5#
- 1...e5
- 2.Bxd5#
- 1...e6!
- threat
- 1.Qxf4?
- threat
- 2.Qc1#
- 1...Be6+
- 2.Sf5#
- 2.Sxe6#
- 1...e5
- 2.Rxc7#
- 1...Be4!
- threat
- 1.Qa6+?
- 1...b5
- 2.Qxb5#
- 1...bxa6!
- 1...b5
- 1.Qb6?
- threat
- 2.Qb5#
- 1...Be6+
- 2.Qxe6#
- 1...Rc5
- 2.Qxc5#
- 1...Bc6
- 2.Qc5#
- 1...e5
- 2.Rxc7#
- 1...Rf6!
- threat
- 1.Se2?
- Keys
- 1.Sb5!
- threat
- 2.Rxf4#
- 1...Be6+
- 2.Qxe6#
- 1...Rxf7
- 2.Qc1#
- 1...Bxf7
- 2.Qxf4#
- 1...Rd4
- 2.Qc1#
- 1...Re4
- 2.Qc1#
- 1...Rg4
- 2.Qc1#
- 1...Rf5
- 2.Qc1#
- 1...Rf6
- 2.Qc1#
- 1...Be4
- 2.Rd4#
- 1...e5
- 2.Rxc7#
- 1...e6
- 2.Sd6#
- threat
- 1.Sb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(e);OGATE,XS(G)::QAR(H)
- R(e);OGATE::QAR(H)
- R(e);OGATE,XR(I)::QAR(H)
- B(g);CHECK,OGATEB::QAB(H),XB(g)
- Tries
- Try
- S(G);
- Threat
- R(I),XR(e)
- Vars
- B(g);CHECK,OGATEB::QAB(H),XB(g)
- R(e);OGATE,XR(I)::QAR(H)
- B(g);N_GUARD,P_SPINB(g),XR(I)::QAR(H),XR(e)
- R(e);OGATE::QAR(H)
- B(g);OGATE::R1(J)
- P(j);OGATE::R(I),XR(i)
- Refutation
- P(j);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,OGATEB::QAB(H),XB(g)
- R(i);XS(G)::R(I),XR(e)
- B(g);XS(G)::B(K)+R(I),DCHECK,XR(e)
- P(h);XS(G)::R(I),XR(e)
- R(e);OGATE::QAR(H)
- P(h);::R(I),XR(e)
- P(j);::S(G)
- Refutation
- P(j);
- Try
- R(I);P_PINB(g),XR(e)
- Threat
- DUALS(7)
- Vars
- P(j);::B(K),XB(g)
- Refutation
- P(j);N_SPINB(g)
- Try
- Q(H);XR(e)
- Threat
- QAR(H)
- Vars
- P(j);OGATE::R(I),XR(i)
- Refutation
- B(g);
- Try
- Q(H);CHECK
- Vars
- P(h);P_SPINP(h)::QAB1(H),XP(h)
- Refutation
- P(h);XQ(H)
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- B(g);CHECK,OGATEB::QAB(H),XB(g)
- R(i);N_GUARD::QAR1(H),XR(i)
- B(g);S_CUTR(i)::QAR1(H)
- P(j);OGATE::R(I),XR(i)
- Refutation
- R(e);
- Try
- Actual
- S(G);
- Threat
- R(I),XR(e)
- Vars
- B(g);CHECK,OGATEB::QAB(H),XB(g)
- R(e);OGATE,XR(I)::QAR(H)
- B(g);N_GUARD,P_SPINB(g),XR(I)::QAR(H),XR(e)
- R(e);OGATE::QAR(H)
- B(g);OGATE::R1(J)
- P(j);OGATE::R(I),XR(i)
- P(j);N_GUARD::S(G)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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