MESON Chess Problem Database
Problem Display
PID: 261626 (Kn4B1/3br1pp/2p5/p6Q/R2qkppN/nR1N4/5B2/b1r5 w - - 0 1)
Schonholzer, Andreas
2nd HM., Schweizerische Schachzeitung, 1973
#2
8 + 14
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Sc5#
- 1...Rb1
- 2.Sc5#
- 1...Rd1
- 2.Sc5#
- 1...Re1
- 2.Sc5#
- 1...Rf1
- 2.Sc5#
- 1...Rg1
- 2.Sc5#
- 1...Rh1
- 2.Sc5#
- 1...Rc3
- 2.Rxd4#
- 1...Rc5
- 2.Sxc5#
- 1...Re5
- 2.Qxe5#
- 1...Re6
- 2.Qf5#
- 1...Rf7
- 2.Qe5#
- 1...Bc3
- 2.Sc5#
- 1...Bf5
- 2.Qxf5#
- 1...Be6
- 2.Qe5#
- 1...Be8
- 2.Qf5#
- 1...Sc2
- 2.Sc5#
- 1...g3
- 2.Qe2#
- 2.Qf3#
- 1...c5
- 2.Bd5#
- 2.Qd5#
- 1...Qc4
- Tries
- 1.Be6?
- threat
- 2.Qe5#
- 2.Qf5#
- 1...Qxa4
- 2.Qf5#
- 1...Rxe6
- 2.Qf5#
- 1...Bxe6
- 2.Qe5#
- 1...Rc3
- 2.Rxd4#
- 2.Qf5#
- 1...Bc3
- 2.Sc5#
- 2.Qf5#
- 1...Qb4
- 2.Qf5#
- 1...Qc4
- 2.Sc5#
- 2.Qf5#
- 1...Rc4
- 2.Qf5#
- 1...Rc5
- 2.Sxc5#
- 1...Rf7
- 2.Qe5#
- 1...Sc4
- 2.Qf5#
- 1...g6
- 2.Qe5#
- 1...g5!
- threat
- 1.Bxh7+?
- 1...Bf5
- 2.Qxf5#
- 1...g6!
- 1...Bf5
- 1.Rc3?
- threat
- 2.Sc5#
- 2.Rxd4#
- 1...Qxa4
- 2.Sc5#
- 1...Rxc3
- 2.Rxd4#
- 1...Bxc3
- 2.Sc5#
- 1...Qb4
- 2.Sc5#
- 1...Qc4
- 2.Sc5#
- 1...Re5
- 2.Rxd4#
- 2.Qxe5#
- 1...Bf5
- 2.Rxd4#
- 2.Qxf5#
- 1...Sc2
- 2.Sc5#
- 1...Sb5
- 2.Sc5#
- 1...Sa6
- 2.Rxd4#
- 1...f3
- 2.Rxd4#
- 1...c5
- 2.Sxc5#
- 2.Bd5#
- 2.Qd5#
- 1...g5
- 2.Rxd4#
- 1...Sc4!
- threat
- 1.Qxg4?
- threat
- 2.Qe2#
- 2.Qf3#
- 2.Qxf4#
- 1...Rc3
- 2.Rxd4#
- 2.Qe2#
- 2.Qf3#
- 1...Re6
- 2.Qf3#
- 2.Qf5#
- 1...Rf7
- 2.Qf3#
- 1...Bc3
- 2.Qe2#
- 2.Qf3#
- 1...Be6
- 2.Qf3#
- 1...Re1
- 2.Qf3#
- 2.Qxf4#
- 1...Rc2
- 2.Qf3#
- 2.Qxf4#
- 1...Rc4
- 2.Qf3#
- 2.Qxf4#
- 1...Sc2
- 2.Qf3#
- 2.Qxf4#
- 1...Sc4
- 2.Qf3#
- 2.Qxf4#
- 1...g5
- 2.Qe2#
- 2.Qf3#
- 1...Bxg4!
- threat
- 1.Qg6+?
- 1...Bf5
- 2.Qxf5#
- 1...hxg6!
- 1...Bf5
- 1.Qxh7+?
- 1...Bf5
- 2.Qxf5#
- 1...g6!
- 1...Bf5
- 1.Be6?
- Keys
- 1.Qg5!
- threat
- 2.Qxf4#
- 1...Rc3
- 2.Rxd4#
- 1...Bc3
- 2.Sc5#
- 1...Re6
- 2.Qf5#
- 1...Rf7
- 2.Qe5#
- 1...Be6
- 2.Qe5#
- 1...f3
- 2.Qe3#
- 2.Qf4#
- threat
- 1.Qg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 12
- Sets
- Q(d);S_CUTR(b)::S(C)
- R(b);N_GUARD::S(C)
- R(b);S_CUTB(a)::R1(D),XQ(d)
- R(b);N_GUARD::S(C),XR(b)
- R(k);N_GUARD::QAR1(F),XR(k)
- R(k);S_CUTB(j)::QAB1(F)
- R(k);N_GUARD::QAR1(F)
- B(a);S_CUTR(b)::S(C)
- B(j);N_GUARD::QAB1(F),XB(j)
- B(j);S_CUTR(k)::QAR1(F)
- B(j);N_GUARD::QAB1(F)
- S(c);S_CUTR(b)::S(C)
- Tries
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- Q(d);N_SPINQ(d),XR(D)::QAB1(F)
- R(k);XB(H)::QAB1(F)
- B(j);XB(H)::QAR1(F)
- Q(d);::QAB1(F)
- R(b);N_SPINQ(d)::QAB1(F)
- R(b);N_GUARD::S(C),XR(b)
- R(k);::QAR1(F)
- S(c);N_SPINQ(d)::QAB1(F)
- P(l);::QAR1(F)
- Refutation
- P(l);
- Try
- B(H);CHECK,XP(m)
- Vars
- B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
- Refutation
- P(l);P_SPINP(l)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- Q(d);N_SPINQ(d),XR(D)::S(C)
- R(b);XR(B)::R1(D),XQ(d)
- B(a);XR(B)::S(C)
- Q(d);::S(C)
- S(c);::S(C)
- S(n);::R1(D),XQ(d)
- P(f);::R1(D),XQ(d)
- P(l);::R1(D),XQ(d)
- Refutation
- S(c);N_SPINQ(d)
- Try
- Q(F);P_PINP(f),XP(g)
- Threat
- DUALS(3)
- Vars
- R(k);::QAB1(F)
- B(j);::QAB1(F)
- Refutation
- B(j);N_SPINP(f),XQ(F)
- Try
- Q(F);CHECK
- Vars
- B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
- Refutation
- P(m);XQ(F)
- Try
- Q(F);CHECK,XP(m)
- Vars
- B(j);N_GUARD,P_SPINB(j)::QAB1(F),XB(j)
- Refutation
- P(l);P_SPINP(l)
- Try
- Actual
- Q(F);
- Threat
- QAR1(F),XP(f)
- Vars
- R(b);S_CUTB(a)::R1(D),XQ(d)
- B(a);S_CUTR(b)::S(C)
- R(k);S_CUTB(j)::QAB1(F)
- R(k);N_GUARD::QAR1(F)
- B(j);S_CUTR(k)::QAR1(F)
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).