MESON Chess Problem Database
Problem Display
PID: 58913 (2b4B/Nr6/2P2R2/4R3/2p5/PBk1PPp1/2P4q/K1Q5 w - - 0 1)
Ellerman, Arnoldo
1st Prize, Olympic Ty., 1964
#2
12 + 6
| 3747 | FIDE Album (1962-1964) | 1968 |
SOLUTION
- SOUND
- Sets
- 1...Qxc2
- 2.Qxc2#
- 1...Qd2
- 2.Qb2#
- 1...Qh3
- 2.Qe1#
- 1...Qh4
- 2.Qe1#
- 1...Qh5
- 2.Qe1#
- 1...Qh6
- 2.Qe1#
- 1...Qh7
- 2.Qe1#
- 1...Qxh8
- 2.Qe1#
- 1...Rb5
- 2.Sxb5#
- 1...Rc7
- 2.Sb5#
- 1...Rd7
- 2.Sb5#
- 1...Re7
- 2.Sb5#
- 1...Rf7
- 2.Sb5#
- 1...Rg7
- 2.Sb5#
- 1...Rh7
- 2.Sb5#
- 1...g2
- 2.Qe1#
- 1...cxb3
- 2.Rc5#
- 1...Qxc2
- Tries
- 1.Rc5?
- threat
- 2.Rxc4#
- 1...Qxc2
- 2.Qxc2#
- 1...Rxb3
- 2.Rh6#
- 1...Qe2
- 2.Rf7#
- 1...Qh4
- 2.Qe1#
- 1...Rb4
- 2.Rh6#
- 1...Be6!
- threat
- 1.Rd5?
- threat
- 2.Qb2#
- 1...Qxc2
- 2.Qxc2#
- 1...Rxb3
- 2.Rh6#
- 1...cxb3
- 2.Rc5#
- 1...Qg1
- 2.Rf7#
- 1...Qh1!
- threat
- 1.Re7?
- threat
- 2.Rh6#
- 1...Qxc2
- 2.Qxc2#
- 1...Qxh8
- 2.Qe1#
- 1...Rxe7
- 2.Sb5#
- 1...Qd2
- 2.Qb2#
- 1...Qh4
- 2.Qe1#
- 1...Qh5
- 2.Qe1#
- 1...Qh6
- 2.Rxh6#
- 2.Qe1#
- 1...Qh7
- 2.Qe1#
- 1...Rb5
- 2.Sxb5#
- 1...Rd7
- 2.Sb5#
- 1...g2
- 2.Qe1#
- 1...cxb3!
- threat
- 1.Rf4?
- threat
- 2.Rxc4#
- 1...Qxc2
- 2.Qxc2#
- 1...Rxb3
- 2.Rh5#
- 1...cxb3
- 2.Rc5#
- 1...Qe2
- 2.Re7#
- 1...Qh4
- 2.Qe1#
- 1...Rb4
- 2.Rh5#
- 1...Be6!
- threat
- 1.Rd6?
- threat
- 2.Qb2#
- 1...Qxc2
- 2.Qxc2#
- 1...Rxb3
- 2.Rh5#
- 1...cxb3
- 2.Rc5#
- 1...Qg1
- 2.Re7#
- 1...Qh1!
- threat
- 1.Rh6?
- threat
- 2.Re7#
- 1...Qxc2
- 2.Qxc2#
- 1...Qxh6
- 2.Qe1#
- 1...cxb3
- 2.Rc5#
- 1...Qd2
- 2.Qb2#
- 1...Qh4
- 2.Qe1#
- 1...Qh5
- 2.Qe1#
- 1...Rb5
- 2.Sxb5#
- 2.Rxb5#
- 2.Rc5#
- 2.Rd5#
- 1...Rd7
- 2.Sb5#
- 1...Re7
- 2.Sb5#
- 2.Rxe7#
- 1...Rf7
- 2.Sb5#
- 1...Rg7
- 2.Sb5#
- 1...Rh7
- 2.Sb5#
- 1...g2
- 2.Qe1#
- 1...Be6!
- threat
- 1.Rf7?
- threat
- 2.Rh5#
- 1...Qxc2
- 2.Qxc2#
- 1...Qxh8
- 2.Qe1#
- 1...Rxf7
- 2.Sb5#
- 1...cxb3
- 2.Rc5#
- 1...Qd2
- 2.Qb2#
- 1...Qh4
- 2.Qe1#
- 1...Qh5
- 2.Rxh5#
- 2.Qe1#
- 1...Qh6
- 2.Qe1#
- 1...Qh7
- 2.Qe1#
- 1...Rb5
- 2.Sxb5#
- 1...Rd7
- 2.Sb5#
- 1...Re7
- 2.Sb5#
- 1...g2
- 2.Qe1#
- 1...Bf5!
- threat
- 1.cxb7?
- threat
- 2.Sb5#
- 1...Qxc2
- 2.Qxc2#
- 1...cxb3
- 2.Rc5#
- 2.Rc6#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Bd7!
- threat
- 1.Rc5?
- Keys
- 1.Rh5!
- threat
- 2.Rf7#
- 1...Qxc2
- 2.Qxc2#
- 1...Qxh5
- 2.Qe1#
- 1...cxb3
- 2.Rc5#
- 1...Qd2
- 2.Qb2#
- 1...Qh4
- 2.Qe1#
- 1...Rb5
- 2.Sxb5#
- 1...Rd7
- 2.Sb5#
- 1...Re7
- 2.Sb5#
- 1...Rf7
- 2.Sb5#
- 2.Rxf7#
- 1...Rg7
- 2.Sb5#
- 1...Rh7
- 2.Sb5#
- 1...g2
- 2.Qe1#
- threat
- 1.Rh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- Q(a);SBLOCK::QAB1(B)
- Q(a);N_GUARD::QAB(B)
- Q(a);N_GUARD,XB(L)::QAB(B)
- R(e);N_GUARD::S(K),XR(e)
- R(e);N_GUARD::S(K)
- P(c);S_CUTQ(a)::QAB(B)
- P(d);OGATEB,XB(E)::R(H)
- Tries
- Try
- R(H);P_PINP(d)
- Threat
- R1(H),XP(d)
- Vars
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- R(e);N_GUARD,XB(E)::B(L)+R(J)
- Q(a);N_GUARD::B(L)+R(J)
- Q(a);N_GUARD::QAB(B)
- R(e);N_GUARD::B(L)+R(J)
- Refutation
- B(f);
- Try
- R(H);
- Threat
- QAB1(B)
- Vars
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- R(e);N_GUARD,XB(E)::B(L)+R(J)
- P(d);OGATEB,XB(E)::R(H)
- Q(a);N_GUARD,P_PINQ(B)::B(L)+R(J)
- Refutation
- Q(a);P_PINQ(B)
- Try
- R(H);
- Threat
- B(L)+R(J)
- Vars
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- Q(a);N_GUARD,XB(L)::QAB(B)
- R(e);N_GUARD,XR(H)::S(K)
- Q(a);SBLOCK::QAB1(B)
- Q(a);N_GUARD::QAB(B)
- R(e);N_GUARD::S(K),XR(e)
- R(e);N_GUARD::S(K)
- P(c);S_CUTQ(a)::QAB(B)
- Refutation
- P(d);XB(E)
- Try
- R(J);
- Threat
- R1(J),XP(d)
- Vars
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- R(e);N_GUARD,XB(E)::B(L)+R(H)
- P(d);XB(E)::B(L)+R(H),DCHECK
- Q(a);N_GUARD::B(L)+R(H)
- Q(a);N_GUARD::QAB(B)
- R(e);N_GUARD::B(L)+R(H)
- Refutation
- B(f);
- Try
- R(J);
- Threat
- QAB1(B)
- Vars
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- R(e);N_GUARD,XB(E)::B(L)+R(H)
- P(d);XB(E)::B(L)+R(H),DCHECK
- Q(a);N_GUARD,P_PINQ(B)::B(L)+R(H)
- Refutation
- Q(a);P_PINQ(B)
- Try
- R(J);
- Threat
- B(L)+R(H)
- Vars
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- Q(a);N_GUARD,XR(J)::QAB(B)
- P(d);XB(E)::B(L)+R(H),DCHECK
- Q(a);SBLOCK::QAB1(B)
- Q(a);N_GUARD::QAB(B)
- R(e);N_GUARD::S(K)
- P(c);S_CUTQ(a)::QAB(B)
- Refutation
- B(f);
- Try
- R(J);
- Threat
- B(L)+R(H)
- Vars
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- Q(a);N_GUARD,XB(L)::QAB(B)
- R(e);N_GUARD,XR(J)::S(K)
- P(d);XB(E)::B(L)+R(H),DCHECK
- Q(a);SBLOCK::QAB1(B)
- Q(a);N_GUARD::QAB(B)
- R(e);N_GUARD::S(K),XR(e)
- R(e);N_GUARD::S(K)
- P(c);S_CUTQ(a)::QAB(B)
- Refutation
- B(f);
- Try
- P(I);XR(e)
- Threat
- S(K)
- Vars
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- Refutation
- B(f);
- Try
- Actual
- R(H);
- Threat
- B(L)+R(J)
- Vars
- Q(a);OGATE,P_SPINQ(a),XP(C)::QAR1(B),XQ(a)
- Q(a);N_GUARD,XR(H)::QAB(B)
- P(d);OGATEB,XB(E)::R(H)
- Q(a);SBLOCK::QAB1(B)
- Q(a);N_GUARD::QAB(B)
- R(e);N_GUARD::S(K),XR(e)
- R(e);N_GUARD::S(K)
- P(c);S_CUTQ(a)::QAB(B)
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).