MESON Chess Problem Database
Problem Display
PID: 101331 (4r3/3Rp3/p2b4/K1Nk1N2/QPpPrp2/2B2B2/5n2/8 w - - 0 1)
Beach, Lennox F
Good Companions, 1921
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Ra8
- Tries
- 1.Kxa6?
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Ra8+!
- 1...Rb8
- 1.Kb6?
- threat
- 2.Qc6#
- 1...Rc8
- 2.Sxe7#
- 1...Rb8+!
- threat
- 1.Se6?
- threat
- 2.Sxf4#
- 2.Sc7#
- 1...Rc8
- 2.Sxf4#
- 1...Sd3
- 2.Sc7#
- 1...Sh3
- 2.Sc7#
- 1...Kxe6!
- threat
- 1.Ba1?
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...c3!
- 1...Ra8
- 1.Bb2?
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...c3!
- 1...Ra8
- 1.Bg2?
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...f3!
- 1...Ra8
- 1.Rd8?
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Rxd8!
- 1...Rf8
- 1.Qc2?
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 2.Qxe4#
- 1...Sh1
- 2.Bxe4#
- 2.Qxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 2.Qxe4#
- 1...Sg4
- 2.Bxe4#
- 2.Qxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kc6!
- 1...Ra8
- 1.Qb5?
- threat
- 2.Qb7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...axb5!
- threat
- 1.Qa1?
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kc6!
- 1...Ra8
- 1.Qa2?
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kc6!
- 1...Ra8
- 1.Qa3?
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kc6!
- 1...Ra8
- 1.b5?
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sd1
- 2.Bxe4#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...axb5!
- 1...Ra8
- 1.Kxa6?
- Keys
- 1.Qd1!
- 1...Kc6
- 2.d5#
- 1...Sxd1
- 2.Bxe4#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sh1
- 2.Bxe4#
- 1...Sd3
- 2.Bxe4#
- 1...Sh3
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kc6
- 1.Qd1!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Tries
- Try
- K(F);P-FLIGHT,XP(f)
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- R(i);CHECK
- Try
- K(F);S_FLIGHT
- Threat
- QAB1(C)
- Vars
- R(i);N_GUARD::S(H),XP(h)
- Refutation
- R(i);CHECK
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(i);::S(G),XP(d)
- S(a);::S(G)
- Refutation
- K(e);N_SPINB(g),N_SPINR(c),S_FLIGHT,XS(G)
- Try
- B(A);
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- P(b);
- Try
- B(A);
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- P(d);N_SPINR(c)
- Try
- R(I);
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- R(i);N_SPINB(g),XR(I)
- Try
- Q(C);
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- K(e);N_SPINB(g),S_FLIGHT
- Try
- Q(C);
- Threat
- QAB(C)
- Vars
- R(i);N_GUARD::S(H),XP(h)
- Refutation
- P(f);XQ(C)
- Try
- Q(C);
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- K(e);N_SPINB(g),S_FLIGHT
- Try
- Q(C);P_PINP(b)
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- K(e);N_SPINB(g),N_SPINP(b),S_FLIGHT
- Try
- Q(C);
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- K(e);N_SPINB(g),S_FLIGHT
- Try
- P(D);
- Vars
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
- Refutation
- P(f);XP(D)
- Try
- Actual
- Q(C);
- Vars
- K(e);N_SPINB(g),OGATE,S_FLIGHT::P(E)
- S(a);N_GUARD,XQ(C)::B(B),XR(c)
- R(i);N_GUARD::S(H),XP(h)
- S(a);N_GUARD::B(B),XR(c)
- P(h);N_GUARD::R1(I),XB(g)
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).