MESON Chess Problem Database
Problem Display
PID: 117867 (1qn1R3/r2p2NK/2P5/p1R1pP1p/N2kb3/3P2Q1/B3P1n1/2B3b1 w - - 0 1)
Ouellet, Charles
5th Prize, Probleemblad, 1989
#2
12 + 11
| 6490 | yacpdb | 2009 |
| 102 | Probleemblad | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Bb2#
- 1...Qc7
- 2.Bb2#
- 1...Qb1
- 2.Qxe5#
- 1...Qb2
- 2.Bxb2#
- 2.Qxe5#
- 1...Qb3
- 2.Qxe5#
- 1...Qb4
- 2.Qxe5#
- 1...Qb5
- 2.Qxe5#
- 1...Qb6
- 2.Qxe5#
- 1...Qb7
- 2.Qxe5#
- 1...Qa8
- 2.Bb2#
- 2.Qxe5#
- 1...Rc7
- 2.Qxe5#
- 1...Bxd3
- 2.Qxd3#
- 1...Bd5
- 2.Rxd5#
- 1...Bxf5+
- 2.Sxf5#
- 1...Se1
- 2.Qxg1#
- 1...Sf4
- 2.Qxg1#
- 1...Sh4
- 2.Qxg1#
- 1...Sb6
- 2.Bb2#
- 1...Sd6
- 2.Qxe5#
- 1...Qd6
- Tries
- 1.Bd2?
- threat
- 2.Bc3#
- 1...Bxf5+
- 2.Sxf5#
- 1...Bxd3
- 2.Qxd3#
- 1...Qb2
- 2.Qxe5#
- 1...Qb3
- 2.Qxe5#
- 1...Qb4
- 2.Qxe5#
- 1...Bf3!
- threat
- 1.Bb3?
- threat
- 2.Bb2#
- 1...Bxf5+
- 2.Sxf5#
- 1...Qxb3
- 2.Qxe5#
- 1...Bxd3
- 2.Qxd3#
- 1...Qb4
- 2.Qxe5#
- 1...Bf3!
- threat
- 1.Bf7?
- threat
- 2.Rc4#
- 1...Bxf5+
- 2.Sxf5#
- 1...Bxd3
- 2.Qxd3#
- 1...Qb3
- 2.Qxe5#
- 1...Qb4
- 2.Qxe5#
- 1...Qb5
- 2.Qxe5#
- 1...Bd5
- 2.Rxd5#
- 1...Sb6
- 2.Bb2#
- 1...Sd6
- 2.Qxe5#
- 1...d5
- 2.Se6#
- 1...Se3!
- threat
- 1.Qf2+?
- 1...Se3
- 2.Bxe3#
- 1...Bxf2!
- 1...Se3
- 1.Qf4?
- threat
- 2.Rd5#
- 2.Qxe4#
- 1...exf4
- 2.Rxe4#
- 1...dxc6
- 2.Qxe4#
- 1...Qd6
- 2.Bb2#
- 2.Qxe4#
- 1...Qb3
- 2.Qxe5#
- 2.Qxe4#
- 1...Qb5
- 2.Qxe5#
- 2.Qxe4#
- 1...Se3
- 2.Qxe4#
- 1...Sb6
- 2.Bb2#
- 2.Qxe4#
- 1...Sd6
- 2.Rd5#
- 2.Qxe5#
- 1...Se7
- 2.Qxe4#
- 1...d5
- 2.Rxd5#
- 1...Sxf4!
- threat
- 1.Qxg2?
- threat
- 2.Qxe4#
- 2.Qxg1#
- 1...Bxf5+
- 2.Sxf5#
- 1...Bxd3
- 2.Rd5#
- 2.Qd5#
- 1...Bxc6
- 2.Rc4#
- 2.Qxg1#
- 1...Bf3
- 2.Qxg1#
- 1...Bf2
- 2.Qxe4#
- 2.Qxf2#
- 1...Bh2
- 2.Qxe4#
- 2.Qf2#
- 1...Be3
- 2.Qxe4#
- 1...Bd5
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxg1#
- 1...Sd6
- 2.Qxg1#
- 1...d5
- 2.Qxg1#
- 1...Bxg2!
- threat
- 1.Qg4?
- threat
- 2.Rd5#
- 2.Qxe4#
- 1...dxc6
- 2.Qxe4#
- 1...Qd6
- 2.Qxe4#
- 1...Qb3
- 2.Qxe4#
- 1...Qb5
- 2.Qxe4#
- 1...Se3
- 2.Qxe4#
- 1...Sf4
- 2.Qxg1#
- 1...Sb6
- 2.Qxe4#
- 1...Sd6
- 2.Rd5#
- 1...Se7
- 2.Qxe4#
- 1...d5
- 2.Rxd5#
- 1...hxg4!
- threat
- 1.dxe4?
- threat
- 2.Rc4#
- 2.Qd3#
- 1...Kxe4
- 2.Qd3#
- 1...Qb1
- 2.Rc4#
- 2.Qxe5#
- 1...Qb3
- 2.Qxe5#
- 1...Qb4
- 2.Qxe5#
- 2.Qd3#
- 1...Qb5
- 2.Qxe5#
- 1...Be3
- 2.Rc4#
- 1...Se1
- 2.Rc4#
- 1...Sf4
- 2.Rc4#
- 1...Sb6
- 2.Qd3#
- 1...Sd6
- 2.Qxe5#
- 2.Qd3#
- 1...d5
- 2.Qd3#
- 1...Se3!
- threat
- 1.c7?
- threat
- 2.Qxe5#
- 1...Bxf5+
- 2.Sxf5#
- 1...Qxc7
- 2.Bb2#
- 1...Sf4
- 2.Qxg1#
- 1...d6
- 2.Se6#
- 1...Bh2!
- threat
- 1.Bd2?
- Keys
- 1.Rd8!
- threat
- 2.Se6#
- 1...Bxf5+
- 2.Sxf5#
- 1...Bxd3
- 2.Qxd3#
- 1...Qd6
- 2.Bb2#
- 1...Qb3
- 2.Qxe5#
- 1...Bd5
- 2.Rxd5#
- 1...Sf4
- 2.Qxg1#
- 1...Sd6
- 2.Qxe5#
- 1...d5
- 2.Rc4#
- 1...d6
- 2.Qxe5#
- threat
- 1.Rd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(j);N_GUARD::B(A)
- Q(j);N_GUARD::QAB1(E),XP(f)
- R(h);S_CUTQ(j)::QAB1(E),XP(f)
- B(d);OGATE,XP(D)::QAR1(E),XB(d)
- B(d);N_GUARD,N_PINP(H)::R1(G),XB(d)
- B(d);CHECK,XP(H)::S(J),XB(d)
- S(b);OGATE::QAB(E),XB(a)
- S(k);S_CUTQ(j)::B(A)
- S(k);S_CUTQ(j)::QAB1(E),XP(f)
- Tries
- Try
- B(A);
- Threat
- B(A)
- Vars
- B(d);CHECK,XP(H)::S(J),XB(d)
- B(d);OGATE,XP(D)::QAR1(E),XB(d)
- Q(j);N_GUARD::QAB1(E),XP(f)
- Refutation
- B(d);N_PINP(H)
- Try
- B(B);
- Threat
- B(A)
- Vars
- B(d);CHECK,XP(H)::S(J),XB(d)
- Q(j);N_GUARD,XB(B)::QAB1(E),XP(f)
- B(d);OGATE,XP(D)::QAR1(E),XB(d)
- Q(j);N_GUARD::QAB1(E),XP(f)
- Refutation
- B(d);N_PINP(H)
- Try
- B(B);
- Threat
- R1(G)
- Vars
- B(d);CHECK,XP(H)::S(J),XB(d)
- B(d);OGATE,XP(D)::QAR1(E),XB(d)
- Q(j);N_GUARD::QAB1(E),XP(f)
- B(d);N_GUARD,N_PINP(H)::R1(G),XB(d)
- S(k);S_CUTQ(j)::B(A)
- S(k);S_CUTQ(j)::QAB1(E),XP(f)
- P(i);N_GUARD::S(J)
- Refutation
- S(b);
- Try
- Q(E);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::B(A),XS(b)
- Refutation
- B(a);XQ(E)
- Try
- Q(E);P_PINB(d)
- Threat
- DUALS(2)
- Vars
- P(f);N_SPINB(d),OGATE,XQ(E)::R1(L),XB(d)
- P(i);P_PINS(J),XP(I)::QAR1(E),XB(d)
- S(b);::QAR1(E),XB(d)
- S(k);::QAR1(E),XB(d)
- P(i);P_PINS(J)::R1(G),XP(i)
- Refutation
- S(b);N_SPINB(d),XQ(E)
- Try
- Q(E);XS(b)
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,XP(H)::S(J),XB(d)
- B(d);N_PINP(H)::QAB(E),XB(a)
- B(a);::QAR1(E),XB(d)
- S(k);::QAB(E),XB(a)
- P(i);P_PINS(J)::QAB(E),XB(a)
- Refutation
- B(d);N_PINP(H),XQ(E)
- Try
- Q(E);P_PINB(d)
- Threat
- DUALS(2)
- Vars
- P(i);P_PINS(J),XP(I)::QAR1(E),XB(d)
- Q(j);::QAR1(E),XB(d)
- S(b);::QAR1(E),XB(d)
- S(b);N_SPINB(d),OGATE::QAB(E),XB(a)
- S(k);::QAR1(E),XB(d)
- S(k);::R1(G)
- P(i);P_PINS(J)::R1(G),XP(i)
- Refutation
- P(g);N_SPINB(d),XQ(E)
- Try
- P(D);N_SPINP(H),XB(d)
- Threat
- DUALS(2)
- Vars
- K(c);P-FLIGHT,P_SPINP(f),XP(D)::QAB1(E)
- Q(j);N_GUARD::QAB1(E),XP(f)
- B(a);::R1(G)
- S(b);::R1(G)
- S(k);::QAR1(E)
- P(i);P_PINS(J)::QAR1(E)
- Refutation
- S(b);
- Try
- P(I);
- Threat
- QAB1(E),XP(f)
- Vars
- B(d);CHECK,XP(H)::S(J),XB(d)
- Q(j);N_GUARD,XP(I)::B(A)
- S(b);OGATE::QAB(E),XB(a)
- P(i);N_GUARD::S(J)
- Refutation
- B(a);
- Try
- Actual
- R(L);P_PINP(i)
- Threat
- S(J)
- Vars
- B(d);CHECK,XP(H)::S(J),XB(d)
- B(d);OGATE,XP(D)::QAR1(E),XB(d)
- Q(j);N_GUARD,N_SPINP(i)::B(A)
- Q(j);N_GUARD::QAB1(E),XP(f)
- B(d);N_GUARD,N_PINP(H),N_SPINP(i)::R1(G),XB(d)
- S(b);OGATE::QAB(E),XB(a)
- S(k);N_SPINP(i),S_CUTQ(j)::QAB1(E),XP(f)
- P(i);P_PINS(J)::R1(G)
- P(i);P_PINS(J),S_CUTQ(j)::QAB1(E),XP(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).