MESON Chess Problem Database
Problem Display
PID: 109555 (8/1rPpKR2/b1NQp3/2nPB1p1/p3k3/b3N1p1/2P1R2q/1B6 w - - 0 1)
Turkstra, Jouwert H
Themes-64, 1971
#2
11 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Sc4#
- 1...Qh3
- 2.Sc4#
- 1...Qh4
- 2.Sc4#
- 1...Qh6
- 2.Sc4#
- 1...Qh7
- 2.Sc4#
- 1...Qh8
- 2.Sc4#
- 1...Rb5
- 2.Sg2#
- 1...Sb3
- 2.c4#
- 1...Sd3
- 2.Sg2#
- 1...g2
- 2.Sc4#
- 1...g4
- 2.Rf4#
- 1...exd5
- 2.Qxd5#
- 2.Qg6#
- 1...Qh1
- Tries
- 1.Ba1?
- threat
- 2.Qe5#
- 1...Qh8
- 2.Sc4#
- 1...Sb3
- 2.c4#
- 1...Sd3
- 2.Sg2#
- 1...g2
- 2.Sc4#
- 1...e5
- 2.Qxe5#
- 2.Qg6#
- 1...Bb2!
- threat
- 1.Bb2?
- threat
- 2.Qe5#
- 1...Qh8
- 2.Sc4#
- 1...Sb3
- 2.c4#
- 1...Sd3
- 2.Sg2#
- 1...g2
- 2.Sc4#
- 1...e5
- 2.Qxe5#
- 2.Qg6#
- 1...Bxb2!
- threat
- 1.Bc3?
- threat
- 2.Qe5#
- 1...Qh8
- 2.Sc4#
- 1...Sd3
- 2.Sg2#
- 1...g2
- 2.Sc4#
- 1...e5
- 2.Qxe5#
- 2.Qg6#
- 1...Sb3!
- threat
- 1.Bg7?
- threat
- 2.Qe5#
- 1...Sb3
- 2.c4#
- 1...Sd3
- 2.Sg2#
- 1...g2
- 2.Sc4#
- 1...e5
- 2.Qxe5#
- 2.Qg6#
- 1...Bb2!
- threat
- 1.Bh8?
- threat
- 2.Qe5#
- 1...Qxh8
- 2.Sc4#
- 1...Sb3
- 2.c4#
- 1...Sd3
- 2.Sg2#
- 1...g2
- 2.Sc4#
- 1...e5
- 2.Qxe5#
- 2.Qg6#
- 1...Bb2!
- threat
- 1.c3+?
- 1...Bd3
- 2.Sg2#
- 1...Sd3
- 2.Sg2#
- 1...Rxb1!
- 1...Bd3
- 1.c4+?
- 1...Sd3
- 2.Sg2#
- 1...Rxb1!
- 1...Sd3
- 1.dxe6?
- threat
- 2.Qd4#
- 2.Qd5#
- 1...Qxe2
- 2.Qd4#
- 1...Bxe2
- 2.Qd4#
- 1...dxc6
- 2.Qd4#
- 1...dxe6
- 2.Qd4#
- 1...Bb2
- 2.Qd5#
- 1...Rb4
- 2.Qd5#
- 1...Bc4
- 2.Qd4#
- 1...Sb3
- 2.c4#
- 1...Sd3
- 2.Sg2#
- 1...Sxe6!
- threat
- 1.Ba1?
- Keys
- 1.Bd4!
- threat
- 2.Qe5#
- 1...Qh8
- 2.Sc4#
- 1...Sb3
- 2.c4#
- 1...Sd3
- 2.Sg2#
- 1...g2
- 2.Sc4#
- 1...e5
- 2.Qxe5#
- 2.Qg6#
- threat
- 1.Bd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::R(C)+S(D)
- Q(a);N_GUARD,P_PINR(K)::R(C)+S(D)
- R(j);S_CUTB(h)::R(C)+S(D)
- S(f);N_GUARD,P_PINQ(H),S_CUTR(j)::B(A)+P(B)
- S(f);P_PINQ(H),S_CUTB(h)::R(C)+S(D)
- P(c);S_CUTQ(a)::R(C)+S(D)
- P(g);N_GUARD::R1(K)
- Tries
- Try
- B(F);
- Threat
- QAR1(H)
- Vars
- Q(a);N_GUARD::R(C)+S(D)
- S(f);N_GUARD,P_PINQ(H),S_CUTR(j)::B(A)+P(B)
- S(f);P_PINQ(H),S_CUTB(h)::R(C)+S(D)
- P(c);S_CUTQ(a)::R(C)+S(D)
- Refutation
- B(b);
- Try
- B(F);
- Threat
- QAR1(H)
- Vars
- Q(a);N_GUARD::R(C)+S(D)
- S(f);N_GUARD,P_PINQ(H)::B(A)+P(B)
- S(f);P_PINQ(H),S_CUTB(h)::R(C)+S(D)
- P(c);S_CUTQ(a)::R(C)+S(D)
- Refutation
- B(b);XB(F)
- Try
- B(F);
- Threat
- QAR1(H)
- Vars
- Q(a);N_GUARD::R(C)+S(D)
- S(f);P_PINQ(H),S_CUTB(h)::R(C)+S(D)
- P(c);S_CUTQ(a)::R(C)+S(D)
- Refutation
- S(f);P_PINQ(H)
- Try
- B(F);
- Threat
- QAR1(H)
- Vars
- S(f);N_GUARD,P_PINQ(H),S_CUTR(j)::B(A)+P(B)
- S(f);P_PINQ(H),S_CUTB(h)::R(C)+S(D)
- P(c);S_CUTQ(a)::R(C)+S(D)
- Refutation
- B(b);
- Try
- B(F);
- Threat
- QAR1(H)
- Vars
- Q(a);N_GUARD,XB(F)::R(C)+S(D)
- S(f);N_GUARD,P_PINQ(H),S_CUTR(j)::B(A)+P(B)
- S(f);P_PINQ(H),S_CUTB(h)::R(C)+S(D)
- P(c);S_CUTQ(a)::R(C)+S(D)
- Refutation
- B(b);
- Try
- P(B);CHECK
- Vars
- B(h);P_SPINB(h)::R(C)+S(D)
- S(f);P_PINQ(H),P_SPINS(f)::R(C)+S(D)
- Refutation
- R(j);XB(A)
- Try
- P(B);CHECK
- Vars
- S(f);P_PINQ(H),P_SPINS(f)::R(C)+S(D)
- Refutation
- R(j);XB(A)
- Try
- P(E);XP(i)
- Threat
- DUALS(2)
- Vars
- Q(a);XR(C)::QAR1(H)
- B(h);XR(C)::QAR1(H)
- P(k);P_PINP(I),XS(G)::QAR1(H)
- P(k);P_PINP(I),XP(E)::QAR1(H)
- B(b);::QAB1(H)
- R(j);::QAB1(H)
- B(h);::QAR1(H)
- S(f);N_GUARD,P_PINQ(H),S_CUTR(j)::B(A)+P(B)
- S(f);P_PINQ(H),S_CUTB(h)::R(C)+S(D)
- Refutation
- S(f);P_PINQ(H),XP(E)
- Try
- Actual
- B(F);
- Threat
- QAR1(H)
- Vars
- Q(a);N_GUARD::R(C)+S(D)
- S(f);N_GUARD,P_PINQ(H),S_CUTR(j)::B(A)+P(B)
- S(f);P_PINQ(H),S_CUTB(h)::R(C)+S(D)
- P(c);S_CUTQ(a)::R(C)+S(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).