MESON Chess Problem Database
Problem Display
PID: 227125 (2R5/p1b2n1K/Br5p/1p4p1/Q2B4/1p1k2NR/1rbppp2/Nq5n w - - 0 1)
Fastosky, Pedro
Schakend Nederland, 1962
#2
8 + 16
| 15601 | Albrecht-Leiss-Degener Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Bxb5#
- 1...Re6
- 2.Bxb5#
- 1...Rf6
- 2.Bxb5#
- 1...Rg6
- 2.Bxb5#
- 1...Bf4
- 2.Rc3#
- 1...Be5
- 2.Rc3#
- 1...Bd6
- 2.Rc3#
- 1...Bb8
- 2.Rc3#
- 1...Bd8
- 2.Rc3#
- 1...Rd6
- Tries
- 1.Sxh1+?
- 1...Bg3
- 2.Sxf2#
- 1...Ke4!
- 1...Bg3
- 1.Se4+?
- 1...Bg3
- 2.Sc5#
- 1...Sg3
- 2.Sxf2#
- 2.Sc5#
- 1...Kxe4!
- 1...Bg3
- 1.Bxb2?
- threat
- 2.Qd4#
- 2.Qe4#
- 1...Ke3+
- 2.Sf5#
- 1...Bxg3
- 2.Rc3#
- 2.Qd4#
- 1...Sxg3
- 2.Qd4#
- 1...d1Q
- 2.Qd4#
- 1...d1S
- 2.Qd4#
- 1...d1B
- 2.Qd4#
- 1...d1R
- 2.Qd4#
- 1...e1Q
- 2.Qd4#
- 1...e1R
- 2.Qd4#
- 1...Rd6
- 2.Sxh1#
- 2.Qe4#
- 1...Re6
- 2.Qd4#
- 1...Be5
- 2.Qe4#
- 1...Sd6
- 2.Sxh1#
- 2.Qd4#
- 1...Qxb2!
- threat
- 1.Bxf2?
- threat
- 2.Qd4#
- 1...Kc3+
- 2.Se4#
- 1...Rd6
- 2.Sxh1#
- 1...Be5
- 2.Qe4#
- 1...Sxf2!
- threat
- 1.Bc5?
- threat
- 2.Qd4#
- 1...Kc3+
- 2.Se4#
- 1...Rd6
- 2.Sxh1#
- 1...Be5!
- threat
- 1.Be5?
- threat
- 2.Sxh1#
- 2.Qd4#
- 2.Qe4#
- 1...Ke3+
- 2.Sf5#
- 1...Bxe5
- 2.Qe4#
- 1...Sxg3
- 2.Rxg3#
- 2.Qd4#
- 1...d1Q
- 2.Qd4#
- 1...d1S
- 2.Qd4#
- 1...d1B
- 2.Qd4#
- 1...d1R
- 2.Qd4#
- 1...e1Q
- 2.Qd4#
- 1...e1S
- 2.Qd4#
- 2.Qe4#
- 1...e1B
- 2.Qd4#
- 2.Qe4#
- 1...e1R
- 2.Qd4#
- 1...f1Q
- 2.Qd4#
- 2.Qe4#
- 1...f1S
- 2.Qd4#
- 2.Qe4#
- 1...f1B
- 2.Qd4#
- 2.Qe4#
- 1...f1R
- 2.Qd4#
- 2.Qe4#
- 1...Qf1
- 2.Qd4#
- 2.Qe4#
- 1...Qg1
- 2.Qd4#
- 2.Qe4#
- 1...Rd6
- 2.Sxh1#
- 2.Qe4#
- 1...Rf6
- 2.Qd4#
- 2.Qe4#
- 1...Sd6
- 2.Sxh1#
- 2.Qd4#
- 1...g4
- 2.Qd4#
- 2.Qe4#
- 1...Sxe5!
- threat
- 1.Bxb6?
- threat
- 2.Qd4#
- 1...Kc3+
- 2.Se4#
- 1...Bxb6
- 2.Qe4#
- 1...Be5
- 2.Bxb5#
- 2.Qxb5#
- 2.Qe4#
- 1...axb6!
- threat
- 1.Sxh1+?
- Keys
- 1.Bc3!
- threat
- 2.Qd4#
- 1...Kxc3+
- 2.Se4#
- 1...Ke3+
- 2.Sf5#
- 1...Rd6
- 2.Sxh1#
- 1...Be5
- 2.Qe4#
- threat
- 1.Bc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- R(l);N_GUARD::B(F),XP(j)
- B(o);OGATE::R1(H)
- Tries
- Try
- S(B);CHECK,XS(b)
- Vars
- B(o);P_SPINB(o)::S(B),XP(g)
- Refutation
- K(i);N_SPINP(j),S_FLIGHT
- Try
- S(B);CHECK
- Vars
- B(o);P_SPINB(o)::S(B)
- Refutation
- K(i);N_SPINP(j),S_FLIGHT,XS(B)
- Try
- B(E);XR(c)
- Threat
- DUALS(2)
- Vars
- K(i);CHECK,N_SPINP(j),P-FLIGHT::R(C)+S(B),DCHECK
- S(b);P_SPINS(b),XS(B)::QAR1(D)
- P(e);::QAR1(D)
- P(f);::QAR1(D)
- R(l);::QAR1(D)
- B(o);::QAB1(D)
- Refutation
- Q(a);XB(E)
- Try
- B(E);XP(g)
- Threat
- QAR1(D)
- Vars
- K(i);CHECK,N_SPINP(j),P-FLIGHT,P_SPINB(o)::R(C)+S(B),DCHECK
- R(l);S_CUTB(o)::R(C)+S(B),XS(b)
- B(o);::QAB1(D)
- Refutation
- S(b);XB(E)
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- K(i);CHECK,N_SPINP(j),P-FLIGHT::R(C)+S(B),DCHECK
- R(l);S_CUTB(o)::R(C)+S(B),XS(b)
- Refutation
- B(o);
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- K(i);CHECK,N_SPINP(j),P-FLIGHT::R(C)+S(B),DCHECK
- B(o);XB(E)::QAB1(D)
- P(e);::QAR1(D)
- P(f);::QAR1(D)
- Refutation
- S(p);XB(E)
- Try
- B(E);XR(l)
- Threat
- QAR1(D)
- Vars
- K(i);CHECK,N_SPINP(j),P-FLIGHT,P_SPINB(o)::R(C)+S(B),DCHECK
- B(o);XB(E)::QAB1(D)
- Refutation
- P(n);XB(E)
- Try
- Actual
- B(E);
- Threat
- QAR1(D)
- Vars
- K(i);CHECK,N_SPINP(j),P-FLIGHT,P_SPINB(o),XB(E)::R(C)+S(B),DCHECK
- K(i);CHECK,N_SPINP(j),P-FLIGHT::R(C)+S(B),DCHECK
- R(l);S_CUTB(o)::R(C)+S(B),XS(b)
- B(o);::QAB1(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).