MESON Chess Problem Database
Problem Display
PID: 269202 (Qb6/1r1p4/2nB2N1/2PkpP2/pPn4R/prP5/B7/3NK3 w - - 0 1)
Ravenscroft, C
Sunday Referee, 1930
(First published on Sun Aug 24 1930)
#2
11 + 10
| 15239 | Valois Notebooks | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Bxc4#
- 1...Rb2
- 2.Se3#
- 2.Bxc4#
- 1...Rxc3
- 2.Sxc3#
- 1...R3xb4
- 2.Se3#
- 1...R7xb4
- 2.Se7#
- 1...Rb5
- 2.Se7#
- 1...Rb6
- 2.Se7#
- 1...Ra7
- 2.Se7#
- 1...Rc7
- 2.Se7#
- 1...Bxd6
- 2.Qg8#
- 1...Ba7
- 2.Qg8#
- 1...Bc7
- 2.Qg8#
- 1...Sb2
- 2.Se3#
- 1...Sd2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...S4a5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...Sxd6
- 2.Se3#
- 1...Sxb4
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...S6a5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sd8
- 2.Se7#
- 1...e4
- 2.Sf4#
- 1...Rb1
- Tries
- 1.Kf1?
- 1...Se3+
- 2.Sxe3#
- 1...Rxc3
- 2.Sxc3#
- 1...R3xb4
- 2.Se3#
- 1...R7xb4
- 2.Se7#
- 1...Bxd6
- 2.Qg8#
- 1...Sxd6
- 2.Se3#
- 1...Sxb4
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...S6a5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sd8
- 2.Se7#
- 1...Rb1
- 2.Bxc4#
- 1...Rb2
- 2.Se3#
- 2.Bxc4#
- 1...Rb5
- 2.Se7#
- 1...Rb6
- 2.Se7#
- 1...Ra7
- 2.Se7#
- 1...Rc7
- 2.Se7#
- 1...Ba7
- 2.Qg8#
- 1...Bc7
- 2.Qg8#
- 1...Sb2
- 2.Se3#
- 1...S4a5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...e4
- 2.Sf4#
- 1...Sd2+!
- 1...Se3+
- 1.Kf2?
- 1...Rxc3
- 2.Sxc3#
- 1...R3xb4
- 2.Se3#
- 1...R7xb4
- 2.Se7#
- 1...Bxd6
- 2.Qg8#
- 1...Sxd6
- 2.Se3#
- 1...Sxb4
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...S6a5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sd8
- 2.Se7#
- 1...Rb1
- 2.Se3#
- 2.Bxc4#
- 1...Rb5
- 2.Se7#
- 1...Rb6
- 2.Se7#
- 1...Ra7
- 2.Se7#
- 1...Rc7
- 2.Se7#
- 1...Ba7
- 2.Qg8#
- 1...Bc7
- 2.Qg8#
- 1...Sb2
- 2.Se3#
- 1...Sd2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...S4a5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...e4
- 2.Sf4#
- 1...Rb2+!
- 1...Rxc3
- 1.Bb1?
- threat
- 2.Be4#
- 1...Rxc3
- 2.Sxc3#
- 1...Sxd6
- 2.Se3#
- 1...Sb2
- 2.Se3#
- 1...Sd2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...S4a5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...e4
- 2.Sf4#
- 2.Bxe4#
- 1...Rxb1!
- threat
- 1.Bxb3?
- threat
- 2.Se3#
- 2.Bxc4#
- 1...Rxb4
- 2.Se3#
- 2.Se7#
- 1...Sxb4
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...Sa5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sd8
- 2.Se7#
- 1...e4
- 2.Se3#
- 2.Sf4#
- 1...axb3!
- threat
- 1.Qxb8?
- threat
- 2.Qg8#
- 1...Sxd6
- 2.Se3#
- 2.Qxd6#
- 1...Sxb4
- 2.Se7#
- 1...Sxb8
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...S6a5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sd8
- 2.Se7#
- 1...Rxb8!
- threat
- 1.Kf1?
- Keys
- 1.Rg4!
- 1...Rxc3
- 2.Sxc3#
- 1...R3xb4
- 2.Se3#
- 1...R7xb4
- 2.Se7#
- 1...Bxd6
- 2.Qg8#
- 1...Sxd6
- 2.Se3#
- 1...Sxb4
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...S6a5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sd8
- 2.Se7#
- 1...Rb1
- 2.Bxc4#
- 1...Rb2
- 2.Se3#
- 2.Bxc4#
- 1...Rb5
- 2.Se7#
- 1...Rb6
- 2.Se7#
- 1...Ra7
- 2.Se7#
- 1...Rc7
- 2.Se7#
- 1...Ba7
- 2.Qg8#
- 1...Bc7
- 2.Qg8#
- 1...Sb2
- 2.Se3#
- 1...Sd2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...S4a5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...e4
- 2.Sf4#
- 1...Rxc3
- 1.Rg4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);OGATE,P_PINS(A),P_SPINS(d)::B(C),XS(d)
- R(b);P_SPINS(d),XP(D)::S(A),XR(b)
- R(b);P_SPINS(d),XP(E)::S(A)
- R(h);P_SPINS(g),XP(E)::S(J)
- R(h);P_SPINS(g)::S(J)
- B(j);OGATE,XB(I)::QAB(K)
- B(j);OGATE::QAB(K)
- S(d);N_GUARD,P_SPINR(b)::S(A)
- S(d);N_GUARD,P_SPINR(b)::S(A),XS(d)
- S(d);N_GUARD,P_SPINR(b),XB(I)::S(A)
- S(g);N_GUARD,P_SPINR(h),XP(E)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J),XS(g)
- P(f);N_GUARD,SBLOCK::S(J)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- S(d);CHECK,N_GUARD,P_SPINR(b)::S(A),XS(d)
- R(b);P_SPINS(d),XP(D)::S(A),XR(b)
- R(b);P_SPINS(d),XP(E)::S(A)
- R(h);P_SPINS(g),XP(E)::S(J)
- B(j);OGATE,XB(I)::QAB(K)
- S(d);N_GUARD,P_SPINR(b),XB(I)::S(A)
- S(g);N_GUARD,P_SPINR(h),XP(E)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J),XS(g)
- R(b);OGATE,P_PINS(A),P_SPINS(d)::B(C),XS(d)
- R(h);P_SPINS(g)::S(J)
- B(j);OGATE::QAB(K)
- S(d);N_GUARD,P_SPINR(b)::S(A)
- P(f);N_GUARD,SBLOCK::S(J)
- Refutation
- S(d);CHECK,P_SPINR(b)
- Try
- K(B);S_FLIGHT
- Vars
- R(b);P_SPINS(d),XP(D)::S(A),XR(b)
- R(b);P_SPINS(d),XP(E)::S(A)
- R(h);P_SPINS(g),XP(E)::S(J)
- B(j);OGATE,XB(I)::QAB(K)
- S(d);N_GUARD,P_SPINR(b),XB(I)::S(A)
- S(g);N_GUARD,P_SPINR(h),XP(E)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J),XS(g)
- R(h);P_SPINS(g)::S(J)
- B(j);OGATE,P_PINP(G)::QAB(K)
- B(j);OGATE::QAB(K)
- S(d);N_GUARD,P_SPINR(b)::S(A)
- S(d);N_GUARD,P_SPINR(b)::S(A),XS(d)
- P(f);N_GUARD,SBLOCK::S(J)
- Refutation
- R(b);CHECK,P_SPINS(d)
- Try
- B(C);
- Threat
- B(C)
- Vars
- R(b);XP(D)::S(A),XR(b)
- S(d);N_GUARD,XB(I)::S(A)
- S(d);N_GUARD::S(A)
- S(d);N_GUARD::S(A),XS(d)
- Refutation
- R(b);P_PINS(A),XB(C)
- Try
- B(C);P_PINS(d),XR(b)
- Threat
- DUALS(2)
- Vars
- S(g);N_GUARD,P_SPINR(h),XP(E)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J),XS(g)
- Refutation
- P(c);N_SPINS(d),XB(C)
- Try
- Q(K);XB(j)
- Threat
- QAB(K)
- Vars
- S(g);N_GUARD,XP(E)::S(J)
- S(g);N_GUARD,XQ(K)::S(J)
- S(g);N_GUARD::S(J)
- S(g);N_GUARD::S(J),XS(g)
- Refutation
- R(h);XQ(K)
- Try
- Actual
- R(F);
- Vars
- R(b);P_SPINS(d),XP(D)::S(A),XR(b)
- R(b);P_SPINS(d),XP(E)::S(A)
- R(h);P_SPINS(g),XP(E)::S(J)
- B(j);OGATE,XB(I)::QAB(K)
- S(d);N_GUARD,P_SPINR(b),XB(I)::S(A)
- S(g);N_GUARD,P_SPINR(h),XP(E)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J)
- S(g);N_GUARD,P_SPINR(h)::S(J),XS(g)
- R(b);OGATE,P_PINS(A),P_SPINS(d)::B(C),XS(d)
- R(h);P_SPINS(g)::S(J)
- B(j);OGATE::QAB(K)
- S(d);N_GUARD,P_SPINR(b)::S(A)
- S(d);N_GUARD,P_SPINR(b)::S(A),XS(d)
- P(f);N_GUARD,SBLOCK::S(J)
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).