MESON Chess Problem Database
Problem Display
PID: 83946 (1NB5/5p2/2K2pr1/2QPkPpq/2P1b3/n5P1/1p3p1B/4RR2 w - - 0 1)
Toth, Gyula
Dunaujvarosi TST, 1963
#2
11 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.g4#
- 1...Qe2
- 2.g4#
- 1...Qh4
- 2.gxh4#
- 1...fxe1Q
- 2.Sd7#
- 1...fxe1S
- 2.Sd7#
- 1...fxe1B
- 2.Sd7#
- 1...fxe1R
- 2.Sd7#
- 1...Qd1
- Tries
- 1.Kc7?
- threat
- 2.Sc6#
- 2.d6#
- 1...fxe1Q
- 2.Sc6#
- 2.Sd7#
- 1...fxe1S
- 2.Sc6#
- 2.Sd7#
- 1...fxe1B
- 2.Sc6#
- 2.Sd7#
- 1...fxe1R
- 2.Sc6#
- 2.Sd7#
- 1...Qd1
- 2.Sc6#
- 2.g4#
- 1...Qe2
- 2.Sc6#
- 2.g4#
- 1...Sb5+!
- threat
- 1.Rd1?
- threat
- 2.Qd4#
- 2.Qd6#
- 2.Qe7#
- 1...Bxd5+
- 2.Qxd5#
- 1...Qxd1
- 2.g4#
- 1...Bxf5
- 2.Qd4#
- 1...Sxc4
- 2.Qd4#
- 2.Qe7#
- 1...Bb1
- 2.Qd4#
- 2.Qe7#
- 1...Bh1
- 2.Qd4#
- 2.Qe7#
- 1...Bc2
- 2.Qd4#
- 2.Qe7#
- 1...Bg2
- 2.Qd4#
- 2.Qe7#
- 1...Bf3
- 2.Qd4#
- 2.Qe7#
- 1...Sc2
- 2.Qd6#
- 2.Qe7#
- 1...Sb5
- 2.Qe7#
- 1...Bd3!
- threat
- 1.Qxf2?
- threat
- 2.Sd7#
- 2.Qxb2#
- 1...Qxh2
- 2.Sd7#
- 1...Sxc4
- 2.Sd7#
- 1...b1Q
- 2.Sd7#
- 1...b1S
- 2.Sd7#
- 1...b1B
- 2.Sd7#
- 2.Qb2#
- 1...b1R
- 2.Sd7#
- 1...Qd1
- 2.Sd7#
- 2.g4#
- 1...Qe2
- 2.Sd7#
- 2.g4#
- 1...Sb1
- 2.Sd7#
- 1...Sc2
- 2.Sd7#
- 1...Sb5
- 2.Sd7#
- 1...Qf3!
- threat
- 1.Qe3?
- threat
- 2.Qc3#
- 2.Qxe4#
- 1...fxe1Q
- 2.Sd7#
- 1...fxe1S
- 2.Sd7#
- 2.Qc3#
- 1...fxe1B
- 2.Sd7#
- 1...fxe1R
- 2.Sd7#
- 2.Qc3#
- 1...b1Q
- 2.Qc3#
- 1...b1S
- 2.Qxe4#
- 1...b1B
- 2.Qc3#
- 1...Qd1
- 2.Qxe4#
- 2.g4#
- 1...Qe2
- 2.Qc3#
- 2.g4#
- 1...Qg4
- 2.Qc3#
- 1...Qh4
- 2.Qc3#
- 2.gxh4#
- 1...Sb1
- 2.Qxe4#
- 1...Sc2
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Qf3!
- threat
- 1.Kc7?
- Keys
- 1.Kd7!
- threat
- 2.d6#
- 1...Kxf5
- 2.Kd6#
- 1...fxe1Q
- 2.Sc6#
- 1...fxe1S
- 2.Sc6#
- 1...fxe1B
- 2.Sc6#
- 1...fxe1R
- 2.Sc6#
- 1...Qd1
- 2.g4#
- 1...Qe2
- 2.g4#
- threat
- 1.Kd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(g);N_GUARD::B(C)+P(D)
- Q(g);N_GUARD,N_SPINB(d)::B(C)+P(D)
- Q(g);OGATE::B(C)+P(D),XQ(g)
- P(b);N_SPINB(d),XR(A)::S(J)
- Tries
- Try
- K(I);N_SPINP(G),P-FLIGHT
- Threat
- DUALS(2)
- Refutation
- S(c);CHECK
- Try
- R(A);N_PINB(d)
- Threat
- DUALS(3)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(G)::QAR1(F),XB(d)
- Q(g);N_GUARD,XR(A)::B(C)+P(D)
- B(d);N_PINP(G),XP(H)::QAB1(F)
- S(c);::QAR2(F)
- Refutation
- B(d);N_PINP(G)
- Try
- Q(F);XP(b)
- Threat
- DUALS(2)
- Vars
- Q(g);XB(C)::S(J)
- S(c);XP(E)::S(J)
- P(a);::S(J)
- S(c);::S(J)
- Refutation
- Q(g);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- P(b);XR(A)::S(J)
- P(a);::QAB(F)
- P(a);::QAR1(F),XB(d)
- Q(g);::QAB(F)
- S(c);::QAR1(F),XB(d)
- Refutation
- Q(g);
- Try
- Actual
- K(I);N_SPINP(G),S_FLIGHT
- Threat
- QAR(F)+P(G)
- Vars
- K(e);N_SPINB(d),P-FLIGHT,P_SPINP(b),XP(H)::B(K)+K(I)
- P(b);N_SPINB(d),XR(A)::S(J)
- Q(g);N_GUARD,P_PINP(G)::B(C)+P(D)
- Q(g);N_GUARD,N_SPINB(d)::B(C)+P(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).