MESON Chess Problem Database
Problem Display
PID: 242702 (8/6R1/4pp1p/2Q3qR/pPpKN3/r2p4/b2N4/5Bk1 w - - 0 1)
Hartong, Jan
Tijdschrift vd KNSB, 1956
#2
8 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Rxg2#
- 1...Qg3
- 2.Rxg3#
- 1...Qg4
- 2.Rxg4#
- 1...Qg6
- 2.Rxg6#
- 1...Rb3
- 2.Kxc4#
- 1...Rc3
- 2.Kxc3#
- 1...Bb1
- 2.Kxc4#
- 1...Bb3
- 2.Kc3#
- 1...c3
- 2.Kxd3#
- 1...e5+
- 2.Kd5#
- 1...f5
- 2.Ke5#
- 1...Qg2
- Tries
- 1.Sxg5?
- threat
- 2.Ke4#
- 2.Sge4#
- 1...e5+
- 2.Ke4#
- 2.Kd5#
- 1...fxg5
- 2.Ke4#
- 2.Ke5#
- 1...hxg5
- 2.Ke4#
- 1...f5
- 2.Ke5#
- 2.Sge4#
- 1...Kf2!
- threat
- 1.Sxf6?
- threat
- 2.Ke4#
- 1...Qg4+
- 2.Ke5#
- 1...Qg2
- 2.Ke5#
- 2.Rxg2#
- 1...Qg6
- 2.Ke5#
- 1...Kf2!
- threat
- 1.Rxh6?
- 1...e5+
- 2.Kd5#
- 1...Qg2
- 2.Rxg2#
- 1...Qg3
- 2.Rxg3#
- 1...Qg4
- 2.Rxg4#
- 1...Qg6
- 2.Rgxg6#
- 1...Rb3
- 2.Kxc4#
- 1...Rc3
- 2.Kxc3#
- 1...Bb1
- 2.Kxc4#
- 1...Bb3
- 2.Kc3#
- 1...c3
- 2.Kxd3#
- 1...f5
- 2.Ke5#
- 2.Rxg5#
- 1...Qxg7!
- 1...e5+
- 1.Rgxg5+?
- 1...fxg5
- 2.Ke5#
- 1...hxg5!
- 1...fxg5
- 1.Rg6?
- 1...e5+
- 2.Kd5#
- 1...Qg2
- 2.Rxg2#
- 1...Qg3
- 2.Rxg3#
- 1...Qg4
- 2.Rxg4#
- 1...Rb3
- 2.Kxc4#
- 1...Rc3
- 2.Kxc3#
- 1...Bb1
- 2.Kxc4#
- 1...Bb3
- 2.Kc3#
- 1...c3
- 2.Kxd3#
- 1...f5
- 2.Ke5#
- 1...Qxg6!
- 1...e5+
- 1.Rg8?
- 1...e5+
- 2.Kd5#
- 1...Qg2
- 2.Rxg2#
- 1...Qg3
- 2.Rxg3#
- 1...Qg4
- 2.Rxg4#
- 1...Qg6
- 2.Rxg6#
- 1...Qg7
- 2.Rxg7#
- 1...Rb3
- 2.Kxc4#
- 1...Rc3
- 2.Kxc3#
- 1...Bb1
- 2.Kxc4#
- 1...Bb3
- 2.Kc3#
- 1...c3
- 2.Kxd3#
- 1...f5
- 2.Ke5#
- 1...Qxg8!
- 1...e5+
- 1.Qb6?
- 1...e5+
- 2.Kd5#
- 1...Qg2
- 2.Rxg2#
- 1...Qg3
- 2.Rxg3#
- 1...Qg4
- 2.Rxg4#
- 1...Qg6
- 2.Rxg6#
- 1...Rb3
- 2.Kxc4#
- 1...Rc3
- 2.Kxc3#
- 1...Bb1
- 2.Kxc4#
- 1...Bb3
- 2.Kc3#
- 1...c3
- 2.Kxd3#
- 1...f5
- 2.Ke5#
- 1...Qxg7!
- 1...e5+
- 1.Qd6?
- threat
- 2.Qh2#
- 1...Qg3
- 2.Rxg3#
- 2.Qxg3#
- 1...e5+!
- threat
- 1.Qe5?
- threat
- 2.Qh2#
- 1...Qg3
- 2.Rxg3#
- 2.Qxg3#
- 1...fxe5+!
- threat
- 1.Qc7?
- threat
- 2.Qh2#
- 1...Qg3
- 2.Rxg3#
- 2.Qxg3#
- 1...e5+!
- threat
- 1.b5?
- 1...e5+
- 2.Kd5#
- 1...Qg2
- 2.Rxg2#
- 1...Qg3
- 2.Rxg3#
- 1...Qg4
- 2.Rxg4#
- 1...Qg6
- 2.Rxg6#
- 1...Rb3
- 2.Kxc4#
- 1...Rc3
- 2.Kxc3#
- 1...Bb1
- 2.Kxc4#
- 1...Bb3
- 2.Kc3#
- 1...c3
- 2.Kxd3#
- 1...f5
- 2.Ke5#
- 1...Qxg7!
- 1...e5+
- 1.Sxg5?
- Keys
- 1.Qa7!
- 1...e5+
- 2.Kd5#
- 1...Qxg7
- 2.Qxg7#
- 1...Qg2
- 2.Rxg2#
- 1...Qg3
- 2.Rxg3#
- 1...Qg4
- 2.Rxg4#
- 1...Qg6
- 2.Rxg6#
- 1...Rb3
- 2.Kxc4#
- 1...Rc3
- 2.Kxc3#
- 1...Bb1
- 2.Kxc4#
- 1...Bb3
- 2.Kc3#
- 1...c3
- 2.Kxd3#
- 1...f5
- 2.Ke5#
- 1...e5+
- 1.Qa7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(g);OGATE::R1(H),XQ(g)
- Q(g);OGATE::R(H),XQ(g)
- Q(g);OGATE,P_PINS(E)::R(H),XQ(g)
- Q(g);OGATEB::R(H),XQ(g)
- R(c);::QAB(F)+K(D),XP(f)
- R(c);::QAB(F)+K(D),XR(c)
- B(b);::QAB(F)+K(D),XP(f)
- B(b);::QAB(F)+K(D)
- P(f);::QAB(F)+K(D),XP(d)
- P(h);CHECK::QAB(F)+K(D)
- P(i);::QAB(F)+K(D)
- Tries
- Try
- S(E);XQ(g)
- Threat
- DUALS(2)
- Vars
- P(j);P_SPINP(j),XS(E)::QAB(F)+K(D)
- Refutation
- K(a);S_FLIGHT
- Try
- S(E);XP(i)
- Threat
- QAB(F)+K(D)
- Vars
- Q(g);CHECK::QAB(F)+K(D)
- Q(g);::QAB(F)+K(D)
- Refutation
- K(a);N_SPINQ(g),S_FLIGHT
- Try
- R(G);XP(j)
- Vars
- P(h);CHECK::QAB(F)+K(D)
- Q(g);OGATE::R1(H),XQ(g)
- Q(g);OGATE::R(H),XQ(g)
- Q(g);OGATE,P_PINS(E)::R(H),XQ(g)
- Q(g);OGATEB::R(H),XQ(g)
- R(c);::QAB(F)+K(D),XP(f)
- R(c);::QAB(F)+K(D),XR(c)
- B(b);::QAB(F)+K(D),XP(f)
- B(b);::QAB(F)+K(D)
- P(f);::QAB(F)+K(D),XP(d)
- Refutation
- Q(g);N_SPINQ(g),XR(H)
- Try
- R(H);CHECK,XQ(g)
- Vars
- P(i);XR(H)::QAB(F)+K(D)
- Refutation
- P(j);XR(H)
- Try
- R(H);
- Vars
- P(h);CHECK::QAB(F)+K(D)
- Q(g);OGATE::R1(H),XQ(g)
- Q(g);OGATE::R(H),XQ(g)
- Q(g);OGATE,P_PINS(E)::R(H),XQ(g)
- R(c);::QAB(F)+K(D),XP(f)
- R(c);::QAB(F)+K(D),XR(c)
- B(b);::QAB(F)+K(D),XP(f)
- B(b);::QAB(F)+K(D)
- P(f);::QAB(F)+K(D),XP(d)
- P(i);::QAB(F)+K(D)
- Refutation
- Q(g);N_SPINQ(g),XR(H)
- Try
- R(H);
- Vars
- P(h);CHECK::QAB(F)+K(D)
- Q(g);OGATE::R1(H),XQ(g)
- Q(g);OGATE::R(H),XQ(g)
- Q(g);OGATE,P_PINS(E)::R(H),XQ(g)
- Q(g);OGATEB::R(H),XQ(g)
- R(c);::QAB(F)+K(D),XP(f)
- R(c);::QAB(F)+K(D),XR(c)
- B(b);::QAB(F)+K(D),XP(f)
- B(b);::QAB(F)+K(D)
- P(f);::QAB(F)+K(D),XP(d)
- P(i);::QAB(F)+K(D)
- Refutation
- Q(g);N_SPINQ(g),XR(H)
- Try
- Q(F);
- Vars
- P(h);CHECK::QAB(F)+K(D)
- Q(g);OGATE::R1(H),XQ(g)
- Q(g);OGATE::R(H),XQ(g)
- Q(g);OGATE,P_PINS(E)::R(H),XQ(g)
- Q(g);OGATEB::R(H),XQ(g)
- R(c);::QAB(F)+K(D),XP(f)
- R(c);::QAB(F)+K(D),XR(c)
- B(b);::QAB(F)+K(D),XP(f)
- B(b);::QAB(F)+K(D)
- P(f);::QAB(F)+K(D),XP(d)
- P(i);::QAB(F)+K(D)
- Refutation
- Q(g);N_SPINQ(g),XR(H)
- Try
- Q(F);
- Threat
- QAB1(F)
- Refutation
- P(h);CHECK
- Try
- Q(F);
- Threat
- QAB1(F)
- Refutation
- P(i);CHECK,XQ(F)
- Try
- Q(F);
- Threat
- QAB1(F)
- Refutation
- P(h);CHECK
- Try
- P(C);
- Vars
- P(h);CHECK::QAB(F)+K(D)
- Q(g);OGATE::R1(H),XQ(g)
- Q(g);OGATE::R(H),XQ(g)
- Q(g);OGATE,P_PINS(E)::R(H),XQ(g)
- Q(g);OGATEB::R(H),XQ(g)
- R(c);::QAB(F)+K(D),XP(f)
- R(c);::QAB(F)+K(D),XR(c)
- B(b);::QAB(F)+K(D),XP(f)
- B(b);::QAB(F)+K(D)
- P(f);::QAB(F)+K(D),XP(d)
- P(i);::QAB(F)+K(D)
- Refutation
- Q(g);N_SPINQ(g),XR(H)
- Try
- Actual
- Q(F);
- Vars
- P(h);CHECK::QAB(F)+K(D)
- Q(g);N_SPINQ(g),OGATE,XR(H)::QAR(F),XQ(g)
- Q(g);OGATE::R1(H),XQ(g)
- Q(g);OGATE::R(H),XQ(g)
- Q(g);OGATE,P_PINS(E)::R(H),XQ(g)
- Q(g);OGATEB::R(H),XQ(g)
- R(c);::QAB(F)+K(D),XP(f)
- R(c);::QAB(F)+K(D),XR(c)
- B(b);::QAB(F)+K(D),XP(f)
- B(b);::QAB(F)+K(D)
- P(f);::QAB(F)+K(D),XP(d)
- P(i);::QAB(F)+K(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).