MESON Chess Problem Database
Problem Display
PID: 232844 (QK6/1P3N2/3R4/2P2p2/1p2kr2/4r2p/6Rq/6bB w - - 0 1)
Ellerman, Arnoldo
Il Due Mosse, 1956
#2
8 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kf3
- 2.Sg5#
- 1...Re1
- 2.Re2#
- 1...Re2
- 2.Rxe2#
- 1...Ra3
- 2.Re2#
- 1...Rb3
- 2.Re2#
- 1...Rc3
- 2.Re2#
- 1...Rd3
- 2.Re2#
- 1...Rg3
- 2.Re2#
- 1...Rf1
- 2.Rg4#
- 1...Rf2
- 2.Rg4#
- 1...Rg4
- 2.Rxg4#
- 1...Rh4
- 2.Rg4#
- 1...Kf3
- Tries
- 1.Kc7?
- threat
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Kf3
- 2.Sg5#
- 1...Qxh1
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qxg2
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...hxg2
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Re1
- 2.Re2#
- 1...Re2
- 2.Rxe2#
- 1...Ra3
- 2.Re2#
- 1...Rb3
- 2.Re2#
- 1...Rc3
- 2.Re2#
- 1...Rd3
- 2.Re2#
- 1...Rg3
- 2.Re2#
- 1...Rf1
- 2.Rg4#
- 1...Rf2
- 2.Rg4#
- 1...Rg4
- 2.Rxg4#
- 1...Rh4
- 2.Rg4#
- 1...Qg3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Ref3
- 2.Qe8#
- 1...Bf2
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...b3
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Rff3!
- threat
- 1.Rd4+?
- 1...Kf3
- 2.Sg5#
- 1...Kxd4!
- 1...Kf3
- 1.Qa1?
- threat
- 2.Sg5#
- 1...Kf3
- 2.Sg5#
- 1...Re1
- 2.Re2#
- 1...Re2
- 2.Rxe2#
- 1...Ra3
- 2.Re2#
- 1...Rb3
- 2.Re2#
- 1...Rc3
- 2.Re2#
- 1...Rd3
- 2.Re2#
- 1...Rg3
- 2.Re2#
- 1...Rf1
- 2.Rg4#
- 1...Rf2
- 2.Rg4#
- 1...Rg4
- 2.Rxg4#
- 1...Rh4
- 2.Rg4#
- 1...Ref3
- 2.Qe5#
- 1...Rff3
- 2.Qd4#
- 1...Qg3!
- threat
- 1.Qa2?
- threat
- 2.Qd5#
- 1...Kf3
- 2.Sg5#
- 1...Re1
- 2.Re2#
- 1...Re2
- 2.Rxe2#
- 1...Ra3
- 2.Re2#
- 1...Rb3
- 2.Re2#
- 1...Rc3
- 2.Re2#
- 1...Rd3
- 2.Re2#
- 1...Rg3
- 2.Re2#
- 1...Rf1
- 2.Rg4#
- 1...Rf2
- 2.Rg4#
- 1...Rg4
- 2.Rxg4#
- 1...Rh4
- 2.Rg4#
- 1...Ref3
- 2.Qe6#
- 1...Rff3
- 2.Qc4#
- 1...b3!
- threat
- 1.Qa6?
- threat
- 2.Qc6#
- 1...Kf3
- 2.Sg5#
- 1...Re1
- 2.Re2#
- 2.Qd3#
- 1...Re2
- 2.Rxe2#
- 2.Qd3#
- 1...Ra3
- 2.Re2#
- 1...Rb3
- 2.Re2#
- 1...Rc3
- 2.Re2#
- 1...Rd3
- 2.Re2#
- 2.Qxd3#
- 1...Rg3
- 2.Re2#
- 1...Rf1
- 2.Rg4#
- 1...Rf2
- 2.Rg4#
- 1...Rg4
- 2.Rxg4#
- 1...Rh4
- 2.Rg4#
- 1...Rff3
- 2.Qc4#
- 1...Ref3!
- threat
- 1.Kc7?
- Keys
- 1.Qa4!
- threat
- 2.Qc6#
- 1...Kf3
- 2.Sg5#
- 1...Re1
- 2.Re2#
- 1...Re2
- 2.Rxe2#
- 1...Ra3
- 2.Re2#
- 1...Rb3
- 2.Re2#
- 1...Rc3
- 2.Re2#
- 1...Rd3
- 2.Re2#
- 1...Rg3
- 2.Re2#
- 1...Rf1
- 2.Rg4#
- 1...Rf2
- 2.Rg4#
- 1...Rg4
- 2.Rxg4#
- 1...Rh4
- 2.Rg4#
- 1...Ref3
- 2.Qe8#
- 1...Rff3
- 2.Qxb4#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(f);S_FLIGHT::S(F)
- R(c);::B(A)+R(B),DCHECK
- R(c);::B(A)+R(B),DCHECK,XR(c)
- R(g);P_PINR(D)::B(A)+R(B),DCHECK
- R(g);P_PINR(D)::B(A)+R(B),DCHECK,XR(g)
- Tries
- Try
- K(H);S_FLIGHT
- Threat
- DUALS(4)
- Vars
- K(f);S_FLIGHT::S(F)
- R(c);::B(A)+R(B),DCHECK
- R(c);::B(A)+R(B),DCHECK,XR(c)
- R(c);P_PINP(C)::B(A)+R(B),DCHECK
- R(g);P_PINR(D)::B(A)+R(B),DCHECK
- R(g);P_PINR(D)::B(A)+R(B),DCHECK,XR(g)
- R(c);SBLOCK::QAR(G)
- Refutation
- R(g);P_PINR(D)
- Try
- R(D);CHECK
- Vars
- K(f);S_FLIGHT::S(F)
- Refutation
- K(f);P-FLIGHT,XR(D)
- Try
- Q(G);
- Threat
- S(F)
- Vars
- K(f);S_FLIGHT::S(F)
- R(c);::B(A)+R(B),DCHECK
- R(c);::B(A)+R(B),DCHECK,XR(c)
- R(g);P_PINR(D)::B(A)+R(B),DCHECK
- R(g);P_PINR(D)::B(A)+R(B),DCHECK,XR(g)
- R(c);SBLOCK::QAR1(G)
- R(g);P_PINR(D),SBLOCK::QAR1(G)
- Refutation
- Q(b);
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- K(f);S_FLIGHT::S(F)
- R(c);::B(A)+R(B),DCHECK
- R(c);::B(A)+R(B),DCHECK,XR(c)
- R(g);P_PINR(D)::B(A)+R(B),DCHECK
- R(g);P_PINR(D)::B(A)+R(B),DCHECK,XR(g)
- R(c);SBLOCK::QAR2(G)
- R(g);P_PINR(D),SBLOCK::QAR2(G)
- Refutation
- P(e);
- Try
- Q(G);
- Threat
- QAB(G)
- Vars
- K(f);S_FLIGHT::S(F)
- R(c);::B(A)+R(B),DCHECK
- R(g);P_PINR(D)::B(A)+R(B),DCHECK
- R(g);P_PINR(D)::B(A)+R(B),DCHECK,XR(g)
- R(g);P_PINR(D),SBLOCK::QAR2(G)
- Refutation
- R(c);
- Try
- Actual
- Q(G);P_PINP(e)
- Threat
- QAB(G)
- Vars
- K(f);N_SPINP(e),S_FLIGHT::S(F)
- R(c);::B(A)+R(B),DCHECK
- R(c);::B(A)+R(B),DCHECK,XR(c)
- R(g);P_PINR(D)::B(A)+R(B),DCHECK
- R(g);P_PINR(D)::B(A)+R(B),DCHECK,XR(g)
- R(c);SBLOCK::QAR(G)
- R(g);P_PINR(D),SBLOCK::QAR(G),XP(e)
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).