MESON Chess Problem Database
Problem Display
PID: 148572 (1n4R1/1PB5/1pPPKP2/k5pr/1p1N1p2/1P2pr2/1N2B3/3b3Q w - - 0 1)
Dawson, Thomas Rayner
Four-Leaved Shamrock, 1913
#2
12 + 10
| 15256 | TRD Scrapbook | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rxh1
- 2.Rxg5#
- 1...Rh2
- 2.Rxg5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh6
- 2.Rxg5#
- 1...Rh7
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Bc2
- 2.Qa1#
- 1...Bxe2
- 2.Qa1#
- 1...Bxb3+
- 2.Sxb3#
- 1...Sa6
- 2.Sc4#
- 1...Sxc6
- 2.Sxc6#
- 1...Sd7
- 2.Ra8#
- 1...g4
- 2.Qxh5#
- 1...Rf1
- Tries
- 1.Ke7?
- 1...Sxc6+
- 2.Sxc6#
- 1...Rxh1
- 2.Rxg5#
- 1...Bxe2
- 2.Qa1#
- 1...Bxb3
- 2.Sxb3#
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rh2
- 2.Rxg5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh6
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Bc2
- 2.Qa1#
- 1...Sa6
- 2.Sc4#
- 1...Sd7
- 2.Ra8#
- 1...g4
- 2.Qxh5#
- 1...Rh7+!
- 1...Sxc6+
- 1.Kf7?
- 1...Bxb3+
- 2.Sxb3#
- 1...Rxh1
- 2.Rxg5#
- 1...Bxe2
- 2.Qa1#
- 1...Sxc6
- 2.Sxc6#
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rh2
- 2.Rxg5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh6
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Bc2
- 2.Qa1#
- 1...Sa6
- 2.Sc4#
- 1...Sd7
- 2.Ra8#
- 1...g4
- 2.Qxh5#
- 1...Rh7+!
- 1...Bxb3+
- 1.Sxd1?
- 1...Rxh1
- 2.Rxg5#
- 1...Sxc6
- 2.Sxc6#
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rh2
- 2.Rxg5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh6
- 2.Rxg5#
- 1...Rh7
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Sd7
- 2.Ra8#
- 1...g4
- 2.Qxh5#
- 1...Sa6!
- 1...Rxh1
- 1.Bd3?
- 1...Bxb3+
- 2.Sxb3#
- 1...Rxh1
- 2.Rxg5#
- 1...Sxc6
- 2.Sxc6#
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rh2
- 2.Rxg5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh6
- 2.Rxg5#
- 1...Rh7
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Bc2
- 2.Qa1#
- 1...Be2
- 2.Qa1#
- 1...Sa6
- 2.Sc4#
- 1...Sd7
- 2.Ra8#
- 1...g4
- 2.Qxh5#
- 1...e2!
- 1...Bxb3+
- 1.Bb5?
- threat
- 2.Sc4#
- 1...Be2
- 2.Qa1#
- 1...Bxb3+!
- threat
- 1.Bd8?
- 1...Bxb3+
- 2.Sxb3#
- 1...Rxh1
- 2.Rxg5#
- 1...Bxe2
- 2.Qa1#
- 1...Sxc6
- 2.Sxc6#
- 1...Sa6
- 2.Sc4#
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rh2
- 2.Rxg5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh6
- 2.Rxg5#
- 1...Rh7
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Bc2
- 2.Qa1#
- 1...g4
- 2.Qxh5#
- 1...Sd7!
- 1...Bxb3+
- 1.Rg6?
- 1...Bxb3+
- 2.Sxb3#
- 1...Rxh1
- 2.Rxg5#
- 1...Bxe2
- 2.Qa1#
- 1...Sxc6
- 2.Sxc6#
- 1...Sa6
- 2.Sc4#
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rh2
- 2.Rxg5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh6
- 2.Rxg5#
- 1...Rh7
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Bc2
- 2.Qa1#
- 1...g4
- 2.Qxh5#
- 1...Sd7!
- 1...Bxb3+
- 1.Rg7?
- 1...Bxb3+
- 2.Sxb3#
- 1...Rxh1
- 2.Rxg5#
- 1...Bxe2
- 2.Qa1#
- 1...Sxc6
- 2.Sxc6#
- 1...Sa6
- 2.Sc4#
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rh2
- 2.Rxg5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh6
- 2.Rxg5#
- 1...Rh7
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Bc2
- 2.Qa1#
- 1...g4
- 2.Qxh5#
- 1...Sd7!
- 1...Bxb3+
- 1.Rxb8?
- threat
- 2.Ra8#
- 1...Bxb3+
- 2.Sxb3#
- 1...Bxe2
- 2.Qa1#
- 1...Rh8!
- threat
- 1.Qxd1?
- threat
- 2.Qa1#
- 1...Rh1
- 2.Rxg5#
- 1...Rf1!
- threat
- 1.f7?
- 1...Bxb3+
- 2.Sxb3#
- 1...Rxh1
- 2.Rxg5#
- 1...Bxe2
- 2.Qa1#
- 1...Sxc6
- 2.Sxc6#
- 1...Rh2
- 2.Rxg5#
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh7
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Bc2
- 2.Qa1#
- 1...Sa6
- 2.Sc4#
- 1...Sd7
- 2.Ra8#
- 1...g4
- 2.Qxh5#
- 1...Rh6+!
- 1...Bxb3+
- 1.Ke7?
- Keys
- 1.d7!
- 1...Bxb3+
- 2.Sxb3#
- 1...Rxh1
- 2.Rxg5#
- 1...Bxe2
- 2.Qa1#
- 1...Sxc6
- 2.Sxc6#
- 1...Sxd7
- 2.Ra8#
- 1...Rh2
- 2.Rxg5#
- 1...Rf1
- 2.Qd5#
- 1...Rf2
- 2.Qd5#
- 1...Rg3
- 2.Qd5#
- 1...Rfh3
- 2.Qd5#
- 1...Rhh3
- 2.Rxg5#
- 1...Rh4
- 2.Rxg5#
- 1...Rh6
- 2.Rxg5#
- 1...Rh7
- 2.Rxg5#
- 1...Rh8
- 2.Rxg5#
- 1...Bc2
- 2.Qa1#
- 1...Sa6
- 2.Sc4#
- 1...g4
- 2.Qxh5#
- 1...Bxb3+
- 1.d7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- R(h);N_GUARD::R(L),XP(g)
- R(h);N_GUARD,P_PINP(I)::R(L),XP(g)
- B(a);OGATE::QAR(A)
- B(a);OGATE,XB(C)::QAR(A)
- B(a);CHECK,XP(D)::S(E),XB(a)
- S(j);SBLOCK::S(B)
- S(j);XP(F)::S(E),XS(j)
- S(j);OGATE::R(L)
- P(g);OGATEB::QAB1(A),XR(h)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- S(j);CHECK,XP(F)::S(E),XS(j)
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- B(a);OGATE,XB(C)::QAR(A)
- B(a);XP(D)::S(E),XB(a)
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- R(h);N_GUARD::R(L),XP(g)
- B(a);OGATE::QAR(A)
- S(j);SBLOCK::S(B)
- S(j);OGATE::R(L)
- P(g);OGATEB::QAB1(A),XR(h)
- Refutation
- R(h);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- B(a);CHECK,XP(D)::S(E),XB(a)
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- B(a);OGATE,XB(C)::QAR(A)
- S(j);XP(F)::S(E),XS(j)
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- R(h);N_GUARD::R(L),XP(g)
- B(a);OGATE::QAR(A)
- S(j);SBLOCK::S(B)
- S(j);OGATE::R(L)
- P(g);OGATEB::QAB1(A),XR(h)
- Refutation
- R(h);CHECK
- Try
- S(B);XB(a)
- Vars
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- S(j);XP(F)::S(E),XS(j)
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- R(h);N_GUARD::R(L),XP(g)
- R(h);N_GUARD,P_PINP(I)::R(L),XP(g)
- S(j);OGATE::R(L)
- P(g);OGATEB::QAB1(A),XR(h)
- Refutation
- S(j);
- Try
- B(C);
- Vars
- B(a);CHECK,XP(D)::S(E),XB(a)
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- S(j);XP(F)::S(E),XS(j)
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- R(h);N_GUARD::R(L),XP(g)
- R(h);N_GUARD,P_PINP(I)::R(L),XP(g)
- B(a);OGATE::QAR(A)
- S(j);SBLOCK::S(B)
- S(j);OGATE::R(L)
- P(g);OGATEB::QAB1(A),XR(h)
- Refutation
- P(b);
- Try
- B(C);
- Threat
- S(B)
- Vars
- B(a);OGATE::QAR(A)
- Refutation
- B(a);CHECK,XP(D)
- Try
- B(K);
- Vars
- B(a);CHECK,XP(D)::S(E),XB(a)
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- B(a);OGATE,XB(C)::QAR(A)
- S(j);XP(F)::S(E),XS(j)
- S(j);SBLOCK::S(B)
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- R(h);N_GUARD::R(L),XP(g)
- R(h);N_GUARD,P_PINP(I)::R(L),XP(g)
- B(a);OGATE::QAR(A)
- P(g);OGATEB::QAB1(A),XR(h)
- Refutation
- S(j);
- Try
- R(L);
- Vars
- B(a);CHECK,XP(D)::S(E),XB(a)
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- B(a);OGATE,XB(C)::QAR(A)
- S(j);XP(F)::S(E),XS(j)
- S(j);SBLOCK::S(B)
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- R(h);N_GUARD::R(L),XP(g)
- B(a);OGATE::QAR(A)
- P(g);OGATEB::QAB1(A),XR(h)
- Refutation
- S(j);
- Try
- R(L);
- Vars
- B(a);CHECK,XP(D)::S(E),XB(a)
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- B(a);OGATE,XB(C)::QAR(A)
- S(j);XP(F)::S(E),XS(j)
- S(j);SBLOCK::S(B)
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- R(h);N_GUARD::R(L),XP(g)
- R(h);N_GUARD,P_PINP(I)::R(L),XP(g)
- B(a);OGATE::QAR(A)
- P(g);OGATEB::QAB1(A),XR(h)
- Refutation
- S(j);
- Try
- R(L);XS(j)
- Threat
- R(L)
- Vars
- B(a);CHECK,XP(D)::S(E),XB(a)
- B(a);OGATE,XB(C)::QAR(A)
- Refutation
- R(h);
- Try
- Q(A);XB(a)
- Threat
- QAR(A)
- Vars
- R(h);N_GUARD::R(L),XP(g)
- Refutation
- R(c);
- Try
- P(I);
- Vars
- B(a);CHECK,XP(D)::S(E),XB(a)
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- B(a);OGATE,XB(C)::QAR(A)
- S(j);XP(F)::S(E),XS(j)
- R(h);N_GUARD::R(L),XP(g)
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- B(a);OGATE::QAR(A)
- S(j);SBLOCK::S(B)
- S(j);OGATE::R(L)
- P(g);OGATEB::QAB1(A),XR(h)
- Refutation
- R(h);CHECK
- Try
- Actual
- P(G);
- Vars
- B(a);CHECK,XP(D)::S(E),XB(a)
- R(h);N_GUARD,XQ(A)::R(L),XP(g)
- B(a);OGATE,XB(C)::QAR(A)
- S(j);XP(F)::S(E),XS(j)
- S(j);OGATE,XP(G)::R(L)
- R(h);N_GUARD::R(L),XP(g)
- R(c);OGATE::QAR(A)
- R(c);OGATE,SBLOCK::QAR(A)
- R(h);N_GUARD,P_PINP(I)::R(L),XP(g)
- B(a);OGATE::QAR(A)
- S(j);SBLOCK::S(B)
- P(g);OGATEB::QAB1(A),XR(h)
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).