MESON Chess Problem Database
Problem Display
PID: 138605 (8/8/3p2R1/B1p2p1P/5Q2/1qN1K2p/2p4p/N1Rbk2n w - - 0 1)
Ellerman, Arnoldo
Swiat Szachowy, 1932
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Sxa2#
- 2.Sa4#
- 1...Qa4
- 2.Sxa4#
- 1...Qc4
- 2.Sxc2#
- 1...Qd5
- 2.Sxc2#
- 2.Sxd5#
- 1...Qe6+
- 2.Se4#
- 1...Qf7
- 2.Sxc2#
- 2.Sb1#
- 2.Sxd1#
- 2.Sa2#
- 2.Se2#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Sd5#
- 1...Qg8
- 2.Sxc2#
- 2.Sb1#
- 2.Sxd1#
- 2.Sa2#
- 2.Se2#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Sd5#
- 1...Qb1
- 2.Sxb1#
- 1...Qa3
- 2.Sxc2#
- 1...Qxc3+
- 2.Bxc3#
- 1...Qb4
- 2.Sxc2#
- 1...Qb5
- 2.Sxc2#
- 2.Sxb5#
- 1...Qb6
- 2.Sxc2#
- 1...Qb7
- 2.Sxc2#
- 2.Sb5#
- 1...Qb8
- 2.Sxc2#
- 2.Sb5#
- 1...Sf2
- 2.Qxf2#
- 1...Sg3
- 2.Qf2#
- 1...Qa2
- Tries
- 1.Sxb3?
- threat
- 2.Sb1#
- 2.Sxd1#
- 2.Sa2#
- 2.Se2#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Sd5#
- 1...Sf2
- 2.Qxf2#
- 1...d5
- 2.Sb1#
- 2.Sxd1#
- 2.Sa2#
- 2.Se2#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Sxd5#
- 1...c4!
- threat
- 1.Rg2?
- threat
- 2.Re2#
- 1...Qe6+
- 2.Se4#
- 1...Qxc3+
- 2.Bxc3#
- 1...Sf2
- 2.Qxf2#
- 1...Qc4
- 2.Sxc2#
- 1...Qb5
- 2.Sxc2#
- 2.Sxb5#
- 1...Sg3
- 2.Qf2#
- 1...hxg2!
- threat
- 1.Qf3?
- threat
- 2.Qxh1#
- 2.Qe2#
- 1...Qe6+
- 2.Se4#
- 1...Qxc3+
- 2.Bxc3#
- 1...Sf2
- 2.Qe2#
- 2.Qxf2#
- 1...Qc4
- 2.Sxc2#
- 1...Qd5
- 2.Sxc2#
- 2.Sxd5#
- 2.Qe2#
- 1...Qb5
- 2.Sxc2#
- 2.Sxb5#
- 1...Qb7
- 2.Sxc2#
- 2.Sb5#
- 2.Qe2#
- 1...Sg3
- 2.Qf2#
- 1...f4+!
- threat
- 1.Sxb3?
- Keys
- 1.Re6!
- 1...Qxe6+
- 2.Se4#
- 1...Qxc3+
- 2.Bxc3#
- 1...Sf2
- 2.Qxf2#
- 1...c4
- 2.Kd4#
- 1...Qa2
- 2.Sxa2#
- 2.Sa4#
- 1...Qa4
- 2.Sxa4#
- 1...Qc4
- 2.Sxc2#
- 1...Qd5
- 2.Sxc2#
- 2.Sxd5#
- 1...Qb1
- 2.Kd3#
- 2.Sxb1#
- 1...Qb2
- 2.Kd3#
- 1...Qa3
- 2.Kd3#
- 2.Sxc2#
- 1...Qb4
- 2.Sxc2#
- 1...Qb5
- 2.Sxc2#
- 2.Sxb5#
- 1...Qb6
- 2.Kd3#
- 2.Sxc2#
- 1...Qb7
- 2.Sxc2#
- 2.Sb5#
- 1...Qb8
- 2.Kd3#
- 2.Sxc2#
- 2.Sb5#
- 1...Sg3
- 2.Qf2#
- 1...d5
- 2.Kd3#
- 1...Qxe6+
- 1.Re6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- Q(f);N_PINS(C)::B(F)+S(C),XQ(f)
- Q(f);N_GUARD,N_PINS(C)::S(A),XP(d)
- Q(f);CHECK,N_PINS(C)::B(F)+S(C)
- Q(f);N_GUARD::S(A),XP(d)
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(C)::B(F),XQ(f)
- S(c);N_GUARD::QAB1(E),XS(c)
- S(c);N_GUARD::QAB1(E)
- Tries
- Try
- S(A);N_SPINS(C),XQ(f)
- Threat
- DUALS(8)
- Vars
- S(c);N_GUARD::QAB1(E),XS(c)
- Refutation
- P(h);
- Try
- R(H);
- Threat
- R1(H)
- Vars
- Q(f);CHECK,N_PINS(C)::B(F)+S(C)
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(C)::B(F),XQ(f)
- S(c);N_GUARD::QAB1(E),XS(c)
- Q(f);N_GUARD,N_PINS(C)::S(A),XP(d)
- S(c);N_GUARD::QAB1(E)
- Refutation
- P(g);XR(H)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,N_PINS(C)::B(F)+S(C)
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(C)::B(F),XQ(f)
- Q(f);N_GUARD,N_PINS(C)::S(A),XP(d)
- S(c);N_GUARD::QAB1(E)
- Refutation
- P(i);CHECK
- Try
- Actual
- R(H);
- Vars
- Q(f);CHECK,N_PINS(C),XR(H)::B(F)+S(C)
- Q(f);CHECK,OGATE,P_SPINQ(f),XS(C)::B(F),XQ(f)
- S(c);N_GUARD::QAB1(E),XS(c)
- P(h);::R(H)+K(D)
- Q(f);N_PINS(C)::B(F)+S(C),XQ(f)
- Q(f);N_GUARD,N_PINS(C)::S(A),XP(d)
- Q(f);N_GUARD,N_PINS(C)::R(H)+K(D)
- S(c);N_GUARD::QAB1(E)
- P(j);S_CUTQ(f)::R(H)+K(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).