MESON Chess Problem Database
Problem Display
PID: 71437 (8/2pB2p1/2rp1bN1/p2k3K/N1nrp3/8/Q7/B1RR4 w - - 0 1)
Lewis, Robert Tony
Chess, 1952
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxd1
- 2.Sf4#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Rc5
- 2.Sc3#
- 1...Ra6
- 2.Qxc4#
- 1...Rb6
- 2.Qxc4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...e3
- 2.Qg2#
- 1...Rxd1
- Tries
- 1.Kg4?
- 1...Rxd1
- 2.Sf4#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Rc5
- 2.Sc3#
- 1...Ra6
- 2.Qxc4#
- 1...Rb6
- 2.Qxc4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...e3+!
- 1...Rxd1
- 1.Sb6+?
- 1...Kc5
- 2.Qxa5#
- 1...Rxb6
- 2.Qxc4#
- 1...cxb6!
- 1...Kc5
- 1.Se7+?
- 1...Ke5
- 2.Qh2#
- 1...Bxe7!
- 1...Ke5
- 1.Bb2?
- 1...Rxd1
- 2.Sf4#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Rc5
- 2.Sc3#
- 1...Ra6
- 2.Qxc4#
- 1...Rb6
- 2.Qxc4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...e3!
- 1...Rxd1
- 1.Bxd4?
- threat
- 2.Sc3#
- 2.Sf4#
- 2.Be5#
- 2.Bxf6#
- 1...e3
- 2.Sc3#
- 2.Qg2#
- 1...Bh4
- 2.Sc3#
- 2.Sf4#
- 2.Ba1#
- 2.Bg1#
- 2.Bb2#
- 2.Bf2#
- 2.Bc3#
- 2.Be3#
- 2.Bc5#
- 2.Be5#
- 2.Bb6#
- 2.Bf6#
- 2.Ba7#
- 2.Bxg7#
- 1...Be5
- 2.Sc3#
- 2.Se7#
- 2.Bxe5#
- 1...Bg5
- 2.Sc3#
- 2.Be3#
- 1...Be7
- 2.Sc3#
- 2.Sf4#
- 2.Sxe7#
- 2.Ba1#
- 2.Bg1#
- 2.Bb2#
- 2.Bf2#
- 2.Bc3#
- 2.Be3#
- 2.Bc5#
- 2.Be5#
- 2.Bb6#
- 2.Bf6#
- 2.Ba7#
- 2.Bxg7#
- 1...Bd8
- 2.Sc3#
- 2.Sf4#
- 2.Ba1#
- 2.Bg1#
- 2.Bb2#
- 2.Bf2#
- 2.Bc3#
- 2.Be3#
- 2.Bc5#
- 2.Be5#
- 2.Bb6#
- 2.Bf6#
- 2.Ba7#
- 2.Bxg7#
- 1...Bxd4!
- threat
- 1.Bh3?
- 1...Rxd1
- 2.Sf4#
- 1...Ra6
- 2.Qxc4#
- 1...Rb6
- 2.Qxc4#
- 1...e3
- 2.Qg2#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...Rc5!
- 1...Rxd1
- 1.Bg4?
- 1...Rxd1
- 2.Sf4#
- 1...Ra6
- 2.Qxc4#
- 1...Rb6
- 2.Qxc4#
- 1...e3
- 2.Qg2#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...Rc5!
- 1...Rxd1
- 1.Bf5?
- 1...Rxd1
- 2.Sf4#
- 1...Ra6
- 2.Qxc4#
- 1...Rb6
- 2.Qxc4#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...e3
- 2.Qg2#
- 1...Rc5!
- 1...Rxd1
- 1.Bc8?
- 1...Rxd1
- 2.Sf4#
- 1...Ra6
- 2.Qxc4#
- 1...Rb6
- 2.Qxc4#
- 1...e3
- 2.Qg2#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...Rc5!
- 1...Rxd1
- 1.Rc2?
- 1...Rxd1
- 2.Sf4#
- 1...Ra6
- 2.Qxc4#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Rc5
- 2.Sc3#
- 1...Rb6
- 2.Qxc4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...e3!
- 1...Rxd1
- 1.Rxc4?
- threat
- 2.Sc3#
- 2.Rcxd4#
- 2.Rc5#
- 2.Rxc6#
- 1...Rxd1
- 2.Sf4#
- 2.Rd4#
- 2.Rc5#
- 2.Rxc6#
- 1...e3
- 2.Sc3#
- 2.Rcxd4#
- 1...Ra6
- 2.Sc3#
- 2.Rcc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rb4#
- 2.Rcxd4#
- 2.Rc5#
- 2.Rc6#
- 2.Rxc7#
- 1...Rd2
- 2.Sf4#
- 2.Rd4#
- 2.Rc5#
- 2.Rxc6#
- 1...Rd3
- 2.Sf4#
- 2.Rd4#
- 2.Rc5#
- 2.Rxc6#
- 1...Rc5
- 2.Sc3#
- 2.Rcxd4#
- 2.Rxc5#
- 1...Rb6
- 2.Sc3#
- 2.Rb4#
- 2.Rcxd4#
- 2.Rc5#
- 1...Rxc4!
- threat
- 1.Rd2?
- 1...Rxd2
- 2.Sf4#
- 1...Ra6
- 2.Qxc4#
- 1...Rd3
- 2.Sf4#
- 1...Rc5
- 2.Sc3#
- 1...Rb6
- 2.Qxc4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...e3!
- 1...Rxd2
- 1.Rd3?
- 1...Rxd3
- 2.Sf4#
- 1...e3
- 2.Qg2#
- 1...Ra6
- 2.Qxc4#
- 1...Rc5
- 2.Sc3#
- 1...Rb6
- 2.Qxc4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...exd3!
- 1...Rxd3
- 1.Qb3?
- 1...Rxd1
- 2.Sf4#
- 1...Ra6
- 2.Qxc4#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Rc5
- 2.Sc3#
- 1...Rb6
- 2.Qxc4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...e3!
- 1...Rxd1
- 1.Kg4?
- Keys
- 1.Qc2!
- 1...Rxd1
- 2.Sf4#
- 1...Ra6
- 2.Qxc4#
- 1...Rd2
- 2.Sf4#
- 1...Rd3
- 2.Sf4#
- 1...Rc5
- 2.Sc3#
- 1...Rb6
- 2.Qxc4#
- 1...Bh4
- 2.Rxd4#
- 1...Be5
- 2.Se7#
- 1...Bg5
- 2.Rxd4#
- 1...Be7
- 2.Rxd4#
- 1...Bd8
- 2.Rxd4#
- 1...Sb2
- 2.Qxc6#
- 1...Sd2
- 2.Qxc6#
- 1...Sa3
- 2.Qxc6#
- 1...Se3
- 2.Qxc6#
- 1...Se5
- 2.Sf4#
- 2.Rxd4#
- 1...Sb6
- 2.Qxc6#
- 1...e3
- 2.Qg2#
- 1...Rxd1
- 1.Qc2!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(b);N_SPINR(b),XR(C)::S(G)
- R(b);::S(G)
- R(f);SBLOCK::S(E)
- R(f);N_GUARD::QAB1(D),XS(a)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- P(c);OGATEB::QAB(D)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(b);::S(G)
- R(f);SBLOCK::S(E)
- R(f);N_GUARD::QAB1(D),XS(a)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- Refutation
- P(c);CHECK
- Try
- S(E);CHECK
- Vars
- K(e);N_SPINR(b),P-FLIGHT::QAR2(D),XP(d)
- R(f);XS(E)::QAB1(D),XS(a)
- Refutation
- P(i);XS(E)
- Try
- S(G);CHECK
- Vars
- K(e);N_SPINS(a),P-FLIGHT::QAB(D)
- Refutation
- B(h);XS(G)
- Try
- B(A);
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(b);::S(G)
- R(f);SBLOCK::S(E)
- R(f);N_GUARD::QAB1(D),XS(a)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- Refutation
- P(c);
- Try
- B(A);XR(b)
- Threat
- DUALS(4)
- Refutation
- B(h);P_SPINB(h),XB(A)
- Try
- B(H);
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(f);N_GUARD::QAB1(D),XS(a)
- P(c);OGATEB::QAB(D)
- R(b);::S(G)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- Refutation
- R(f);
- Try
- B(H);
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(f);N_GUARD::QAB1(D),XS(a)
- P(c);OGATEB::QAB(D)
- R(b);::S(G)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- Refutation
- R(f);
- Try
- B(H);
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(f);N_GUARD::QAB1(D),XS(a)
- R(b);::S(G)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- P(c);OGATEB::QAB(D)
- Refutation
- R(f);
- Try
- B(H);
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(f);N_GUARD::QAB1(D),XS(a)
- P(c);OGATEB::QAB(D)
- R(b);::S(G)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- Refutation
- R(f);
- Try
- R(B);
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(f);N_GUARD::QAB1(D),XS(a)
- R(b);::S(G)
- R(f);SBLOCK::S(E)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- Refutation
- P(c);
- Try
- R(B);XS(a)
- Threat
- DUALS(4)
- Refutation
- R(f);N_SPINR(b),P_SPINR(f),XR(B)
- Try
- R(C);
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(f);N_GUARD::QAB1(D),XS(a)
- R(b);::S(G)
- R(f);SBLOCK::S(E)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- Refutation
- P(c);
- Try
- R(C);
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- P(c);OGATEB::QAB(D)
- R(f);N_GUARD::QAB1(D),XS(a)
- R(f);SBLOCK::S(E)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- Refutation
- P(c);N_SPINR(b),XR(C)
- Try
- Q(D);
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(f);N_GUARD::QAB1(D),XS(a)
- R(b);::S(G)
- R(f);SBLOCK::S(E)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- Refutation
- P(c);
- Try
- Actual
- Q(D);N_PINS(a)
- Vars
- R(b);N_SPINR(b),XR(C)::S(G)
- R(f);N_GUARD::QAB1(D),XS(a)
- R(b);::S(G)
- R(f);SBLOCK::S(E)
- B(h);N_GUARD::R1(C),XR(b)
- B(h);N_GUARD,SBLOCK::S(G)
- S(a);OGATE::QAB1(D),XR(f)
- S(a);N_SPINR(b),OGATE::QAB1(D),XR(f)
- P(c);OGATEB::QAB(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).