MESON Chess Problem Database
Problem Display
PID: 108997 (5qn1/1pPN1pN1/1R4b1/2Pk1PR1/7P/rP1K1P1r/B5Q1/8 w - - 0 1)
Monteiro da Silveira, Jose Luis
Boletim da UBP, 1963
#2
13 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Rxd6#
- 1...Qxg7
- 2.Rd6#
- 1...Qa8
- 2.Rd6#
- 1...Qb8
- 2.Rd6#
- 1...Qc8
- 2.Rd6#
- 1...Qd8
- 2.Rd6#
- 1...Qe8
- 2.Rd6#
- 1...Rxb3+
- 2.Bxb3#
- 1...Ra4
- 2.bxa4#
- 1...Rh1
- 2.f4#
- 1...Rxf3+
- 2.Qxf3#
- 1...Rxh4
- 2.f4#
- 1...Bxf5+
- 2.Rxf5#
- 1...Bh5
- 2.f6#
- 1...Sf6
- 2.fxg6#
- 1...Se7
- 2.Rd6#
- 1...Qd6
- Tries
- 1.Sf6+?
- 1...Kxc5
- 2.Qg1#
- 2.Qf2#
- 1...Sxf6
- 2.fxg6#
- 1...Ke5!
- 1...Kxc5
- 1.Se6?
- threat
- 2.Sf4#
- 1...Rxb3+
- 2.Bxb3#
- 1...Rxf3+
- 2.Qxf3#
- 1...Bxf5+
- 2.Rxf5#
- 1...Rxh4
- 2.f4#
- 1...Qd6
- 2.Rxd6#
- 1...Ra4
- 2.bxa4#
- 1...fxe6!
- threat
- 1.Qb2?
- threat
- 2.Qd4#
- 2.Qe5#
- 1...Rxb3+
- 2.Bxb3#
- 2.Qxb3#
- 1...Bxf5+
- 2.Rxf5#
- 1...Qxc5
- 2.Qe5#
- 1...Qxg7
- 2.Rd6#
- 1...Rxh4
- 2.Qe5#
- 1...Qd6
- 2.Rxd6#
- 2.Qd4#
- 1...Qe7
- 2.Qd4#
- 1...Qe8
- 2.Rd6#
- 2.Qd4#
- 1...Ra4
- 2.Qe5#
- 2.bxa4#
- 1...f6
- 2.Qd4#
- 1...Rxf3+!
- threat
- 1.Qe2?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Rxb3+
- 2.Bxb3#
- 1...Rxf3+
- 2.Qxf3#
- 1...Bxf5+
- 2.Rxf5#
- 2.Qe4#
- 1...Qxg7
- 2.Rd6#
- 2.Qe4#
- 1...Rxh4
- 2.Qe5#
- 1...Qd6
- 2.Rxd6#
- 2.Qe4#
- 1...Qe8
- 2.Rd6#
- 1...Ra4
- 2.Qe5#
- 2.bxa4#
- 1...Sf6
- 2.Qe5#
- 2.fxg6#
- 1...f6
- 2.Qe4#
- 2.Qe6#
- 1...Qe7!
- threat
- 1.Qf2?
- threat
- 2.Qd4#
- 1...Rxb3+
- 2.Bxb3#
- 1...Rxf3+
- 2.Qxf3#
- 1...Bxf5+
- 2.Rxf5#
- 1...Qxc5
- 2.Qxc5#
- 1...Qxg7
- 2.Rd6#
- 1...Ra4
- 2.bxa4#
- 1...Rxh4!
- threat
- 1.Qg4?
- threat
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Rxb3+
- 2.Bxb3#
- 1...Rxf3+
- 2.Qxf3#
- 1...Bxf5+
- 2.Rxf5#
- 2.Qxf5#
- 2.Qe4#
- 1...Qxc5
- 2.Qe4#
- 1...Qxg7
- 2.Rd6#
- 2.Qc4#
- 2.Qe4#
- 1...Qe7
- 2.Qc4#
- 2.Qd4#
- 1...Qe8
- 2.Rd6#
- 2.Qc4#
- 2.Qd4#
- 1...Ra4
- 2.bxa4#
- 1...Sf6
- 2.Qc4#
- 2.Qd4#
- 2.fxg6#
- 1...Rxh4!
- threat
- 1.c8Q?
- threat
- 2.Qxb7#
- 1...Rxb3+
- 2.Bxb3#
- 1...Rxf3+
- 2.Qxf3#
- 1...Bxf5+
- 2.Rxf5#
- 1...Qxc5
- 2.Qxc5#
- 1...Qxc8
- 2.Rd6#
- 1...Qd6
- 2.Rxd6#
- 1...Se7
- 2.Rd6#
- 1...Ra7!
- threat
- 1.Sf6+?
- Keys
- 1.Sh5!
- threat
- 2.Sf4#
- 1...Rxb3+
- 2.Bxb3#
- 1...Rxf3+
- 2.Qxf3#
- 1...Bxf5+
- 2.Rxf5#
- 1...Rxh4
- 2.f4#
- 1...Bxh5
- 2.f6#
- 1...Qd6
- 2.Rxd6#
- 1...Ra4
- 2.bxa4#
- threat
- 1.Sh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- Q(g);N_GUARD::R1(J),XQ(g)
- Q(g);N_GUARD,XS(M)::R1(J)
- Q(g);N_GUARD::R1(J)
- R(a);CHECK,OGATE,P_PINP(E),P_SPINR(a),XP(C)::B(A),XR(a)
- R(a);N_PINP(C),P_PINP(E)::B(A)+P(C),XR(a)
- R(b);OGATE::QAB(B)+P(E)
- R(b);CHECK,OGATE,P_SPINR(b),XP(E)::QAB(B),XR(b)
- R(b);OGATE,XP(F)::QAB(B)+P(E)
- B(d);CHECK,OGATE,P_SPINB(d),XP(H)::R(I),XB(d)
- B(d);OGATE::R(I)+P(H)
- S(h);S_CUTP(f)::R(I)+P(H),XB(d)
- S(h);S_CUTQ(g)::R1(J)
- Tries
- Try
- S(L);CHECK
- Vars
- S(h);XS(L)::R(I)+P(H),XB(d)
- Refutation
- K(c);P-FLIGHT
- Try
- S(M);
- Threat
- S(M)
- Vars
- R(a);CHECK,OGATE,P_PINP(E),P_SPINR(a),XP(C)::B(A),XR(a)
- R(b);CHECK,OGATE,P_SPINR(b),XP(E)::QAB(B),XR(b)
- B(d);CHECK,OGATE,P_SPINB(d),XP(H)::R(I),XB(d)
- R(b);OGATE,XP(F)::QAB(B)+P(E)
- Q(g);N_GUARD::R1(J),XQ(g)
- R(a);N_PINP(C),P_PINP(E)::B(A)+P(C),XR(a)
- Refutation
- P(f);XS(M)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XP(H)::R(I),XB(d)
- Q(g);XP(G)::QAR1(B)
- Q(g);N_GUARD,XS(M)::R1(J)
- R(b);XP(F)::QAR1(B)
- Q(g);::QAR1(B)
- P(f);::QAR1(B)
- Refutation
- R(b);CHECK,XP(E)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE,P_PINP(E),P_SPINR(a),XP(C)::B(A),XR(a)
- R(b);CHECK,OGATE,XP(E)::QAB(B),XR(b)
- R(b);XP(F)::QAR1(B)
- Q(g);N_GUARD::R1(J)
- Refutation
- Q(g);
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- R(a);CHECK,OGATE,P_PINP(E),P_SPINR(a),XP(C)::B(A),XR(a)
- R(b);CHECK,OGATE,XP(E)::QAB(B),XR(b)
- B(d);CHECK,OGATE,P_SPINB(d),XP(H)::R(I),XB(d)
- Q(g);OGATE,XP(G)::QAR1(B),XQ(g)
- Q(g);N_GUARD,XS(M)::R1(J)
- R(a);N_PINP(C),P_PINP(E)::B(A)+P(C),XR(a)
- Refutation
- R(b);XP(F)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- R(a);CHECK,OGATE,P_PINP(E),P_SPINR(a),XP(C)::B(A),XR(a)
- R(b);CHECK,OGATE,XP(E)::QAB(B),XR(b)
- Q(g);XP(G)::QAB1(B)
- R(a);N_PINP(C),P_PINP(E)::B(A)+P(C),XR(a)
- Refutation
- R(b);XP(F)
- Try
- P(K);
- Threat
- QAB(K),XP(e)
- Vars
- R(a);CHECK,OGATE,P_PINP(E),P_SPINR(a),XP(C)::B(A),XR(a)
- R(b);CHECK,OGATE,P_SPINR(b),XP(E)::QAB(B),XR(b)
- B(d);CHECK,OGATE,P_SPINB(d),XP(H)::R(I),XB(d)
- Q(g);OGATE,XP(G)::QAR1(K),XQ(g)
- Q(g);N_GUARD,XQ(K)::R1(J)
- Q(g);N_GUARD::R1(J),XQ(g)
- S(h);S_CUTQ(g)::R1(J)
- Refutation
- R(a);N_PINP(C),P_PINP(E)
- Try
- Actual
- S(M);
- Threat
- S(M)
- Vars
- R(a);CHECK,OGATE,P_PINP(E),P_SPINR(a),XP(C)::B(A),XR(a)
- R(b);CHECK,OGATE,P_SPINR(b),XP(E)::QAB(B),XR(b)
- B(d);CHECK,OGATE,P_SPINB(d),XP(H)::R(I),XB(d)
- R(b);OGATE,XP(F)::QAB(B)+P(E)
- B(d);OGATE,XS(M)::R(I)+P(H)
- Q(g);N_GUARD::R1(J),XQ(g)
- R(a);N_PINP(C),P_PINP(E)::B(A)+P(C),XR(a)
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).