MESON Chess Problem Database
Problem Display
PID: 940 (7n/3p4/3NpP1p/2PPk3/8/pbr2QRK/n3N2P/B7 w - - 0 1)
Saunders, Denis M
The Problemist Supplement, 1993
#2
10 + 9
| 3936 | The Wizard of Oz | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Ba4
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Bxd5
- 2.Qf4#
- 1...Sc1
- 2.Bxc3#
- 1...Sb4
- 2.Bxc3#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...exd5
- 2.Qf5#
- 1...h5
- 2.Rg5#
- 1...Bd1
- Tries
- 1.Kg2?
- 1...exd5
- 2.Qf5#
- 1...Bd1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Ba4
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Sc1
- 2.Bxc3#
- 1...Sb4
- 2.Bxc3#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...h5
- 2.Rg5#
- 1...Bxd5!
- 1...exd5
- 1.Kg4?
- 1...Bxd5
- 2.Qf4#
- 1...exd5
- 2.Qf5#
- 1...Bd1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Ba4
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Sc1
- 2.Bxc3#
- 1...Sb4
- 2.Bxc3#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...h5+!
- 1...Bxd5
- 1.Kh4?
- 1...Bxd5
- 2.Qf4#
- 1...exd5
- 2.Qf5#
- 1...Bd1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Ba4
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Sc1
- 2.Bxc3#
- 1...Sb4
- 2.Bxc3#
- 1...Sf7
- 2.Sxf7#
- 1...h5
- 2.Rg5#
- 1...Sg6+!
- 1...Bxd5
- 1.Sxc3?
- threat
- 2.Sxa2#
- 1...Kd4
- 2.Qe3#
- 1...Sxc3
- 2.Bxc3#
- 1...Sc1
- 2.Sb1#
- 2.Sd1#
- 2.Sa2#
- 2.Se2#
- 2.Sa4#
- 2.Scb5#
- 1...Sb4
- 2.Sb1#
- 2.Sd1#
- 2.Sa2#
- 2.Se2#
- 2.Sa4#
- 2.Scb5#
- 1...exd5!
- threat
- 1.Bb2?
- 1...Bxd5
- 2.Qf4#
- 1...exd5
- 2.Qf5#
- 1...Bd1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Ba4
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Sc1
- 2.Bxc3#
- 1...Sb4
- 2.Bxc3#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...h5
- 2.Rg5#
- 1...axb2!
- 1...Bxd5
- 1.Rg7?
- 1...exd5
- 2.Re7#
- 1...Bd1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Ba4
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Sc1
- 2.Bxc3#
- 1...Sb4
- 2.Bxc3#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...h5
- 2.Rg5#
- 1...Bxd5!
- 1...exd5
- 1.Rg8?
- 1...exd5
- 2.Re8#
- 1...Bd1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Ba4
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Sc1
- 2.Bxc3#
- 1...Sb4
- 2.Bxc3#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...h5
- 2.Rg5#
- 1...Bxd5!
- 1...exd5
- 1.Qg4?
- threat
- 2.Qd4#
- 1...Kxf6
- 2.Qg7#
- 1...exd5
- 2.Qf5#
- 1...Kxd5!
- threat
- 1.Qf2?
- threat
- 2.Qd4#
- 1...exd5
- 2.Re3#
- 2.Qf5#
- 1...Kxd5!
- threat
- 1.Qd3?
- threat
- 2.Qd4#
- 1...exd5
- 2.Qf5#
- 1...Kxf6!
- threat
- 1.f7?
- 1...Bxd5
- 2.Qf4#
- 1...Sxf7
- 2.Sxf7#
- 1...exd5
- 2.Qf5#
- 1...Bd1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Ba4
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Sc1
- 2.Bxc3#
- 1...Sb4
- 2.Bxc3#
- 1...h5
- 2.Rg5#
- 1...Sg6!
- 1...Bxd5
- 1.Kg2?
- Keys
- 1.Rg6!
- 1...Bxd5
- 2.Qg3#
- 1...Sxg6
- 2.Sf7#
- 1...exd5
- 2.Qe3#
- 1...Bd1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Ba4
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Sc1
- 2.Bxc3#
- 1...Sb4
- 2.Bxc3#
- 1...Sf7
- 2.Sxf7#
- 1...h5
- 2.Rg5#
- 1...Bxd5
- 1.Rg6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(c);N_GUARD::S(I)
- B(c);N_GUARD::S(I),XB(c)
- B(c);SBLOCK,XP(H)::QAB1(D)
- S(a);N_GUARD::B(A),XR(d)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(f);N_GUARD,SBLOCK,XP(H)::QAR1(D)
- P(g);N_GUARD::R(E)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- P(f);N_GUARD,SBLOCK,XP(H)::QAR1(D)
- B(c);N_GUARD::S(I)
- B(c);N_GUARD::S(I),XB(c)
- S(a);N_GUARD::B(A),XR(d)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(g);N_GUARD::R(E)
- Refutation
- B(c);P_PINQ(D),XP(H)
- Try
- K(F);S_FLIGHT
- Vars
- B(c);SBLOCK,XP(H)::QAB1(D)
- P(f);N_GUARD,SBLOCK,XP(H)::QAR1(D)
- B(c);N_GUARD::S(I)
- B(c);N_GUARD::S(I),XB(c)
- S(a);N_GUARD::B(A),XR(d)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- Refutation
- P(g);CHECK
- Try
- K(F);P-FLIGHT
- Vars
- B(c);SBLOCK,XP(H)::QAB1(D)
- P(f);N_GUARD,SBLOCK,XP(H)::QAR1(D)
- B(c);N_GUARD::S(I)
- B(c);N_GUARD::S(I),XB(c)
- S(a);N_GUARD::B(A),XR(d)
- S(i);N_GUARD::S(I),XS(i)
- P(g);N_GUARD::R(E)
- Refutation
- S(i);CHECK
- Try
- S(B);XR(d)
- Threat
- B(A)+S(B),XS(a)
- Vars
- K(e);S_FLIGHT::QAB1(D)
- S(a);OGATE,P_SPINS(a),XS(B)::B(A),XS(a)
- Refutation
- P(f);XP(H)
- Try
- B(A);
- Vars
- B(c);SBLOCK,XP(H)::QAB1(D)
- P(f);N_GUARD,SBLOCK,XP(H)::QAR1(D)
- B(c);N_GUARD::S(I)
- B(c);N_GUARD::S(I),XB(c)
- S(a);N_GUARD::B(A),XR(d)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(g);N_GUARD::R(E)
- Refutation
- P(b);N_SPINR(d),XB(A)
- Try
- R(E);P_SPINQ(D)
- Vars
- P(f);OGATEB,XP(H)::R(E)
- B(c);N_GUARD::S(I)
- B(c);N_GUARD::S(I),XB(c)
- S(a);N_GUARD::B(A),XR(d)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(g);N_GUARD::R(E)
- Refutation
- B(c);XP(H)
- Try
- R(E);P_SPINQ(D)
- Vars
- P(f);OGATEB,XP(H)::R(E)
- B(c);N_GUARD::S(I)
- B(c);N_GUARD::S(I),XB(c)
- S(a);N_GUARD::B(A),XR(d)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(g);N_GUARD::R(E)
- Refutation
- B(c);XP(H)
- Try
- Q(D);P_SPINR(E)
- Threat
- QAB1(D)
- Vars
- K(e);OGATEB,S_FLIGHT,XP(J)::QAB1(D)
- P(f);N_GUARD,SBLOCK,XP(H)::QAR1(D)
- Refutation
- K(e);N_SPINR(d),P-FLIGHT,XP(H)
- Try
- Q(D);P_SPINR(E)
- Threat
- QAB1(D)
- Refutation
- K(e);N_SPINR(d),P-FLIGHT,XP(H)
- Try
- Q(D);
- Threat
- QAB1(D)
- Vars
- P(f);N_GUARD,SBLOCK,XP(H)::QAR1(D)
- Refutation
- K(e);S_FLIGHT,XP(J)
- Try
- P(J);
- Vars
- B(c);SBLOCK,XP(H)::QAB1(D)
- S(i);XP(J)::S(I),XS(i)
- P(f);N_GUARD,SBLOCK,XP(H)::QAR1(D)
- B(c);N_GUARD::S(I)
- B(c);N_GUARD::S(I),XB(c)
- S(a);N_GUARD::B(A),XR(d)
- P(g);N_GUARD::R(E)
- Refutation
- S(i);
- Try
- Actual
- R(E);P_SPINQ(D)
- Vars
- B(c);SBLOCK,XP(H)::QAB(D)
- S(i);N_GUARD,XR(E)::S(I)
- P(f);SBLOCK,XP(H)::QAR2(D)
- B(c);N_GUARD::S(I)
- B(c);N_GUARD::S(I),XB(c)
- S(a);N_GUARD::B(A),XR(d)
- S(i);N_GUARD::S(I),XS(i)
- P(g);N_GUARD::R(E)
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).