MESON Chess Problem Database
Problem Display
PID: 17302 (2BK1b2/8/2N1rn1B/R1n2k1P/3p2N1/3r1P2/5Q2/6R1 w - - 0 1)
Holladay, Edgar Dinwiddie
Comm., American Chess Bulletin, 1946
#2
10 + 7
| 14773 | The Best American Chess Problems of 1946 | 1948 |
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Sxd4#
- 1...Rb3
- 2.Sxd4#
- 1...Rc3
- 2.Sxd4#
- 1...Re3
- 2.Sxd4#
- 1...Rxf3
- 2.Qxf3#
- 1...Be7+
- 2.Sxe7#
- 1...Bg7
- 2.Se7#
- 1...Ra3
- Tries
- 1.Rxc5+?
- 1...Sd5
- 2.Rxd5#
- 1...Bxc5!
- 1...Sd5
- 1.Qe1?
- threat
- 2.Bxe6#
- 2.Qe5#
- 2.Qxe6#
- 1...Be7+
- 2.Sxe7#
- 1...Bxh6
- 2.Qe5#
- 1...Sxg4
- 2.Qxe6#
- 1...Sxh5
- 2.Qe4#
- 2.Qxe6#
- 1...Re3
- 2.Sxd4#
- 1...Bd6
- 2.Bxe6#
- 2.Qxe6#
- 1...Se4
- 2.Qxe4#
- 2.fxe4#
- 1...Sd5
- 2.Qe5#
- 1...Sd7!
- threat
- 1.Qe3?
- threat
- 2.Bxe6#
- 2.Qf4#
- 2.Qg5#
- 2.Qe5#
- 2.Qxe6#
- 1...Be7+
- 2.Sxe7#
- 1...Rxe3
- 2.Sxd4#
- 1...Bxh6
- 2.Sxh6#
- 2.Se7#
- 2.Bxe6#
- 2.Qe5#
- 1...Sxg4
- 2.Qf4#
- 2.Qg5#
- 2.Qxe6#
- 1...Sxh5
- 2.Qg5#
- 2.Qxd3#
- 2.Qe4#
- 2.Qxe6#
- 1...Bd6
- 2.Bxe6#
- 2.Qg5#
- 2.Qxe6#
- 1...Se4
- 2.Qf4#
- 2.Qxe4#
- 2.fxe4#
- 1...Sd5
- 2.Qg5#
- 2.Qe5#
- 1...Sd7
- 2.Qf4#
- 2.Qg5#
- 1...Sh7
- 2.Bxe6#
- 2.Qf4#
- 2.Qxd3#
- 2.Qe4#
- 2.Qe5#
- 2.Qxe6#
- 1...dxe3+!
- threat
- 1.Qe2?
- threat
- 2.Bxe6#
- 2.Qe5#
- 2.Qxe6#
- 1...Be7+
- 2.Sxe7#
- 1...Bxh6
- 2.Qe5#
- 1...Sxg4
- 2.Qxe6#
- 1...Sxh5
- 2.Qxd3#
- 2.Qe4#
- 2.Qxe6#
- 1...Re3
- 2.Sxd4#
- 1...Bd6
- 2.Bxe6#
- 2.Qxe6#
- 1...Se4
- 2.Qxe4#
- 2.fxe4#
- 1...Sd5
- 2.Qe5#
- 1...Sd7!
- threat
- 1.Qh2?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Be7+
- 2.Sxe7#
- 1...Rxf3
- 2.Qe5#
- 1...Bxh6
- 2.Sxh6#
- 2.Qe5#
- 1...Sxg4
- 2.Qf4#
- 1...Sxh5
- 2.Qxh5#
- 1...Sd7
- 2.Qf4#
- 1...Re3
- 2.Sxd4#
- 2.Qf4#
- 1...Sd5
- 2.Qe5#
- 1...Bd6!
- threat
- 1.Rxc5+?
- Keys
- 1.Qxd4!
- 1...Rxd4+
- 2.Sxd4#
- 1...Be7+
- 2.Sxe7#
- 1...Rxf3
- 2.Qe5#
- 1...Bxh6
- 2.Sxh6#
- 1...Sxg4
- 2.fxg4#
- 1...Sxh5
- 2.Qxd3#
- 1...Rd1
- 2.Se3#
- 1...Rd2
- 2.Se3#
- 1...Ra3
- 2.Qe5#
- 2.Qxf6#
- 2.Qf4#
- 1...Rb3
- 2.Qe5#
- 2.Qxf6#
- 2.Qf4#
- 1...Rc3
- 2.Qe5#
- 2.Qxf6#
- 2.Qf4#
- 1...Re3
- 2.Sxe3#
- 2.Qxf6#
- 2.Qf4#
- 1...Bd6
- 2.Qxf6#
- 1...Bg7
- 2.Se7#
- 1...Se4
- 2.fxe4#
- 1...Sd5
- 2.Qe5#
- 1...Sd7
- 2.Qf4#
- 1...Sh7
- 2.Qxd3#
- 1...Se8
- 2.Qxd3#
- 1...Sg8
- 2.Qxd3#
- 1...Rxd4+
- 1.Qxd4!
There are these versions: 76501
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 13
- REMOVED MATES = 4
- Sets
- R(a);N_GUARD::S(G),XP(b)
- R(a);N_SPINR(e),OGATE,P_SPINR(a),XP(C)::QAR2(B),XR(a)
- B(g);CHECK,N_GUARD::S(G),XB(g)
- B(g);N_GUARD::S(G)
- Tries
- Try
- R(E);CHECK,XS(c)
- Vars
- S(f);N_GUARD,P_SPINS(f)::R(E),XS(f)
- Refutation
- B(g);XR(E)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- B(g);CHECK,N_GUARD::S(G),XB(g)
- B(g);XB(H)::QAR1(B)
- S(f);XS(D)::QAB1(B),XR(e)
- R(a);N_GUARD::S(G),XP(b)
- S(f);N_SPINS(c)::QAR1(B)
- Refutation
- S(f);N_SPINR(e)
- Try
- Q(B);
- Threat
- DUALS(5)
- Vars
- B(g);CHECK,N_GUARD::S(G),XB(g)
- R(a);N_GUARD,XQ(B)::S(G),XP(b)
- Refutation
- P(b);CHECK,XQ(B)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- B(g);CHECK,N_GUARD::S(G),XB(g)
- B(g);XB(H)::QAR1(B)
- S(f);XS(D)::QAB1(B),XR(e)
- R(a);N_GUARD::S(G),XP(b)
- S(f);N_SPINS(c)::QAR1(B)
- Refutation
- S(f);N_SPINR(e)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,N_GUARD::S(G),XB(g)
- R(a);XP(C)::QAR1(B)
- S(f);XS(D)::QAR1(B)
- S(f);OGATE,XP(F)::QAR2(B),XS(f)
- S(f);N_SPINR(e)::QAR1(B)
- S(f);N_SPINS(c)::QAR1(B)
- Refutation
- B(g);
- Try
- Actual
- Q(B);P_SPINQ(B),XP(b)
- Vars
- R(a);CHECK,XQ(B)::S(G),XR(a)
- B(g);CHECK,N_GUARD::S(G),XB(g)
- R(a);N_PINQ(B),XP(C)::QAR1(B)
- B(g);XB(H)::S(D),XB(g)
- S(f);OGATE,XS(D)::P(C),XS(f)
- S(f);N_GUARD,XP(F)::QAB(B),XR(a)
- R(a);N_GUARD::S(D)
- B(g);N_PINQ(B)::QAR1(B),XS(f)
- B(g);N_GUARD::S(G)
- S(f);OGATE::P(C),XS(f)
- S(f);N_PINQ(B),N_SPINS(c)::QAR1(B)
- S(f);N_PINQ(B),N_SPINR(e)::QAR1(B)
- S(f);N_GUARD::QAB(B),XR(a)
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).