MESON Chess Problem Database
Problem Display
PID: 234134 (3N4/b7/3p1Bp1/2pk1p2/N1ppp3/2PR4/BP1K2Q1/8 w - - 0 1)
Keeney, Palmer Gunkel
Chess Life, 1948
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...f4
- 2.Qg5#
- 1...Bb6
- Tries
- 1.Kc1?
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...f4
- 2.Qg5#
- 1...g5!
- 1...Bb6
- 1.Kd1?
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...f4
- 2.Qg5#
- 1...g5!
- 1...Bb6
- 1.Ke1?
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...f4
- 2.Qg5#
- 1...g5!
- 1...Bb6
- 1.Kc2?
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...f4
- 2.Qg5#
- 1...g5!
- 1...Bb6
- 1.Ke2?
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...f4
- 2.Qg5#
- 1...g5!
- 1...Bb6
- 1.Bg7?
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...f4
- 2.Qg5#
- 1...g5!
- 1...Bb6
- 1.Bh8?
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...f4
- 2.Qg5#
- 1...g5!
- 1...Bb6
- 1.Rg3?
- 1...dxc3+
- 2.Sxc3#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...d3
- 2.Rxd3#
- 1...f4
- 2.Rg5#
- 1...g5!
- 1...dxc3+
- 1.Rh3?
- 1...dxc3+
- 2.Sxc3#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...d3
- 2.Rxd3#
- 1...f4
- 2.Qg5#
- 1...g5!
- 1...dxc3+
- 1.Qh3?
- 1...exd3
- 2.Qg2#
- 2.Qh1#
- 2.Qf3#
- 1...g5
- 2.Qxf5#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...f4
- 2.Qe6#
- 1...e3+!
- 1...exd3
- 1.Qg5?
- 1...exd3
- 2.Qg2#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...e3+!
- 1...exd3
- 1.Qxg6?
- threat
- 2.Qxf5#
- 2.Qf7#
- 2.Qg8#
- 1...exd3
- 2.Qxf5#
- 2.Qg2#
- 1...f4
- 2.Qf5#
- 2.Qh5#
- 2.Qf7#
- 2.Qg5#
- 2.Qg8#
- 1...e3+!
- threat
- 1.b3?
- threat
- 2.bxc4#
- 1...cxd3
- 2.c4#
- 1...cxb3!
- threat
- 1.Kc1?
- Keys
- 1.Rf3!
- 1...dxc3+
- 2.Sxc3#
- 1...e3+
- 2.Rxe3#
- 1...exf3
- 2.Qxf3#
- 1...g5
- 2.Rxf5#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 1...d3
- 2.Rxd3#
- 1...f4
- 2.Qg5#
- 1...dxc3+
- 1.Rf3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(f);OGATEB::QAR(D)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(f);OGATEB::QAR(D)
- Refutation
- P(h);
- Try
- K(C);P-FLIGHT
- Vars
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(f);OGATEB::QAR(D)
- Refutation
- P(h);
- Try
- K(C);S_FLIGHT
- Vars
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(f);OGATEB::QAR(D)
- Refutation
- P(h);
- Try
- K(C);P-FLIGHT
- Vars
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(f);OGATEB::QAR(D)
- Refutation
- P(h);
- Try
- K(C);P-FLIGHT
- Vars
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(f);OGATEB::QAR(D)
- Refutation
- P(h);
- Try
- B(H);
- Vars
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(f);OGATEB::QAR(D)
- Refutation
- P(h);
- Try
- B(H);
- Vars
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(f);OGATEB::QAR(D)
- Refutation
- P(h);
- Try
- R(F);
- Vars
- P(b);CHECK,XP(E)::S(G),XP(b)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(b);OGATEB::R(F),XP(b)
- P(f);OGATEB::R(F)
- Refutation
- P(h);
- Try
- R(F);
- Vars
- P(b);CHECK,XP(E)::S(G),XP(b)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(b);OGATEB::R(F),XP(b)
- P(f);OGATEB::QAR(D)
- Refutation
- P(h);
- Try
- Q(D);
- Vars
- P(h);N_GUARD::QAR2(D),XP(f)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(f);OGATE::QAB1(D)
- Refutation
- P(c);CHECK
- Try
- Q(D);
- Vars
- P(c);OGATEB,XR(F)::QAB(D)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- Refutation
- P(c);CHECK
- Try
- Q(D);XP(h)
- Threat
- DUALS(3)
- Refutation
- P(c);CHECK
- Try
- P(B);N_PINP(a),P_PINP(b)
- Threat
- P(B),XP(a)
- Vars
- P(a);N_SPINP(b),OGATE,P_SPINP(c),XR(F)::P(E)
- Refutation
- P(a);N_SPINP(b),P_SPINP(a),XP(B)
- Try
- Actual
- R(F);
- Vars
- P(b);CHECK,XP(E)::S(G),XP(b)
- P(c);CHECK,OGATEB::QAB(D)+R(F),XP(c)
- P(c);N_SPINP(a),OGATE,P_SPINP(c),XR(F)::QAB(D),XP(c)
- P(h);N_GUARD::R(F),XP(f)
- B(i);N_GUARD::S(G),XB(i)
- B(i);N_GUARD::S(G)
- P(b);OGATEB::R(F),XP(b)
- P(f);OGATEB::QAR(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).