MESON Chess Problem Database
Problem Display
PID: 117811 (7B/1B1Q1KP1/3RN1Rb/5k1p/1r3p2/3P1N1P/b7/q7 w - - 0 1)
Novis Filho, Mario
Boletim da UBP, 1964
#2
11 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Sh4#
- 1...Qf6+
- 2.Rxf6#
- 1...Qb1
- 2.Rf6#
- 1...Qc1
- 2.Rf6#
- 1...Qd1
- 2.Rf6#
- 1...Qe1
- 2.Rf6#
- 1...Qf1
- 2.Rf6#
- 1...Qg1
- 2.Rf6#
- 1...Qh1
- 2.Rf6#
- 1...Rb1
- 2.Be4#
- 1...Rb2
- 2.Be4#
- 2.Rf6#
- 1...Rb3
- 2.Sed4#
- 2.Sc5#
- 2.Seg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 2.Be4#
- 1...Rc4
- 2.Sed4#
- 2.Sc5#
- 2.Seg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 1...Rd4
- 2.Rf6#
- 1...Re4
- 2.Bxe4#
- 2.dxe4#
- 1...Rb5
- 2.Be4#
- 1...Rb6
- 2.Be4#
- 1...Bb1
- 2.Sed4#
- 2.Sc5#
- 2.Seg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 1...Bc4
- 2.Be4#
- 1...Bxe6+
- 2.Qxe6#
- 1...Bg5
- 2.Rxg5#
- 1...Bxg7
- 2.Rg5#
- 1...Qe5
- Tries
- 1.Ke8?
- threat
- 2.Sed4#
- 1...Kxg6
- 2.Sf8#
- 1...Bxe6
- 2.Qxe6#
- 1...Qd4
- 2.Sexd4#
- 1...Qe5
- 2.Sh4#
- 1...Qe1
- 2.Qf7#
- 1...Rd4
- 2.Sexd4#
- 2.Qf7#
- 1...Re4
- 2.Bxe4#
- 1...Qf6!
- threat
- 1.Bd5?
- threat
- 2.Sed4#
- 2.Sc5#
- 2.Seg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 1...Qf6+
- 2.Rxf6#
- 1...Qxg7+
- 2.Sxg7#
- 1...Qd4
- 2.Sexd4#
- 2.Sc5#
- 2.Seg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 1...Qe5
- 2.Sh4#
- 2.Sed4#
- 1...Qe1
- 2.Sed4#
- 2.Rf6#
- 1...Rd4
- 2.Sexd4#
- 2.Sc5#
- 2.Seg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 2.Rf6#
- 1...Re4
- 2.Sed4#
- 2.Bxe4#
- 2.dxe4#
- 1...Rb7
- 2.Sed4#
- 2.Sc7#
- 2.Be4#
- 1...Bg5
- 2.Sed4#
- 2.Sc5#
- 2.Sexg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 2.Rxg5#
- 1...Bxd5!
- threat
- 1.Rd4?
- threat
- 2.Be4#
- 2.Rf6#
- 1...Bxe6+
- 2.Qxe6#
- 1...Rxd4
- 2.Rf6#
- 1...Rxb7
- 2.Rf6#
- 1...Bxg7
- 2.Be4#
- 2.Rg5#
- 1...Qe1
- 2.Rf6#
- 1...Bd5
- 2.Rf6#
- 2.Qxd5#
- 1...Bg5
- 2.Be4#
- 2.Rxg5#
- 1...Qxd4!
- threat
- 1.Rd5+?
- 1...Qe5
- 2.Sh4#
- 2.Sed4#
- 2.Sc5#
- 2.Seg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 2.Rxe5#
- 2.Rf6#
- 1...Bxd5!
- 1...Qe5
- 1.Rxh6?
- threat
- 2.Rxh5#
- 1...Qf6+
- 2.Rxf6#
- 1...Bxe6+
- 2.Qxe6#
- 1...Qg1
- 2.Rf6#
- 1...h4
- 2.Rh5#
- 1...Qxg7+!
- threat
- 1.Qb5+?
- 1...Qe5
- 2.Sh4#
- 2.Rf6#
- 2.Qxe5#
- 1...Rxb5
- 2.Be4#
- 1...Bd5!
- 1...Qe5
- 1.g8S?
- threat
- 2.Sh4#
- 2.Sxh6#
- 2.Se7#
- 1...Qf6+
- 2.Rxf6#
- 1...Bxe6+
- 2.Qxe6#
- 1...Qxh8
- 2.Se7#
- 1...Qe1
- 2.Sxh6#
- 2.Se7#
- 2.Rf6#
- 1...Bg5
- 2.Rxg5#
- 1...Bg7
- 2.Se7#
- 2.Rg5#
- 1...Bf8
- 2.Sh4#
- 2.Rg5#
- 1...h4
- 2.Sxh4#
- 2.Sxh6#
- 2.Se7#
- 1...Qg7+!
- threat
- 1.Ke8?
- Keys
- 1.Ke7!
- threat
- 2.Sed4#
- 1...Qf6+
- 2.Rxf6#
- 1...Qxg7+
- 2.Sxg7#
- 1...Bg5+
- 2.Rxg5#
- 1...Kxg6
- 2.Sf8#
- 1...Bxe6
- 2.Qxe6#
- 1...Qd4
- 2.Sexd4#
- 1...Qe5
- 2.Sh4#
- 1...Qe1
- 2.Rf6#
- 1...Rd4
- 2.Sexd4#
- 2.Rf6#
- 1...Re4
- 2.Bxe4#
- threat
- 1.Ke7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 12
- Sets
- Q(a);SBLOCK::S(B)
- Q(a);CHECK,N_GUARD::R1(F),XQ(a)
- Q(a);N_GUARD::R1(F)
- R(c);N_GUARD::B(G)
- R(c);S_CUTQ(a)::R1(F)
- B(b);S_CUTR(c)::B(G)
- B(b);CHECK,OGATE,P_SPINB(b),XS(E)::QAB1(H),XB(b)
- B(g);N_GUARD::R1(F),XB(g)
- B(g);N_GUARD,XP(J)::R1(F)
- Tries
- Try
- K(I);N_SPINS(E),S_FLIGHT
- Threat
- QAB(H)+S(E),DCHECK
- Vars
- K(e);S_FLIGHT,XR(F)::R(D)+S(E),DCHECK
- B(b);OGATE,P_SPINB(b),XS(E)::QAB1(H),XB(b)
- Q(a);::QAB(H)+S(E),DCHECK,XQ(a)
- Q(a);P_PINS(E),SBLOCK::S(B)
- Q(a);N_GUARD,P_PINS(E)::QAR2(H)
- R(c);N_GUARD,P_PINS(E)::B(G),XR(c)
- Refutation
- Q(a);
- Try
- B(G);N_SPINS(E)
- Threat
- DUALS(6)
- Vars
- Q(a);CHECK,N_GUARD::R1(F),XQ(a)
- Q(a);CHECK,XP(J)::QAB(H)+S(E),DCHECK,XQ(a)
- Refutation
- B(b);P_PINS(E),XB(G)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,OGATE,P_SPINB(b),XS(E)::QAB1(H),XB(b)
- R(c);XR(D)::R1(F)
- R(c);P_PINQ(H),XB(G)::R1(F)
- Q(a);::R1(F)
- Refutation
- Q(a);XR(D)
- Try
- R(D);CHECK,N_SPINS(E)
- Refutation
- B(b);P_PINS(E),XR(D)
- Try
- R(F);XB(g)
- Threat
- R(F),XP(f)
- Vars
- Q(a);CHECK,N_GUARD::R1(F),XQ(a)
- B(b);CHECK,OGATE,P_SPINB(b),XS(E)::QAB1(H),XB(b)
- Q(a);N_GUARD::R1(F)
- P(f);::R(F)
- Refutation
- Q(a);CHECK,XP(J)
- Try
- Q(H);CHECK
- Vars
- R(c);XQ(H)::B(G)
- Refutation
- B(b);P_SPINB(b)
- Try
- P(J);
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,N_GUARD::R1(F),XQ(a)
- B(b);CHECK,OGATE,P_SPINB(b),XS(E)::QAB1(H),XB(b)
- Q(a);XB(K)::S(J)
- B(g);N_GUARD::R1(F),XB(g)
- Refutation
- Q(a);CHECK
- Try
- Actual
- K(I);N_SPINS(E),P-FLIGHT
- Threat
- QAB(H)+S(E),DCHECK
- Vars
- Q(a);CHECK,N_GUARD::R1(F),XQ(a)
- Q(a);CHECK,XP(J)::QAB(H)+S(E),DCHECK,XQ(a)
- B(g);CHECK,N_GUARD::R1(F),XB(g)
- K(e);S_FLIGHT,XR(F)::R(D)+S(E),DCHECK
- B(b);OGATE,P_SPINB(b),XS(E)::QAB1(H),XB(b)
- Q(a);::QAB(H)+S(E),DCHECK,XQ(a)
- Q(a);P_PINS(E),SBLOCK::S(B)
- Q(a);N_GUARD,P_PINS(E)::R1(F)
- R(c);N_GUARD,P_PINS(E)::B(G),XR(c)
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).