MESON Chess Problem Database
Problem Display
PID: 266434 (1qn1RB2/r2p2NK/2P3p1/2R1p1b1/1p1k4/1B1P2p1/2P5/4QN1b w - - 0 1)
Ouellet, Charles
Die Schwalbe, 2022
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Qxb4#
- 1...Qc7
- 2.Qxb4#
- 1...Qb5
- 2.Qxe5#
- 1...Qb6
- 2.Qxe5#
- 1...Qb7
- 2.Qxe5#
- 1...Qa8
- 2.Qxb4#
- 2.Qxe5#
- 1...Ra1
- 2.Qxa1#
- 1...Rb7
- 2.Qa1#
- 1...Rc7
- 2.Qa1#
- 2.Qxe5#
- 1...Be4
- 2.Qxe4#
- 1...Bd5
- 2.Rxd5#
- 1...Be3
- 2.Qxe3#
- 1...Bh4
- 2.Qe3#
- 1...Bf6
- 2.Qe3#
- 1...Be7
- 2.Qe3#
- 1...Bd8
- 2.Qe3#
- 1...Sd6
- 2.Qxe5#
- 1...g2
- 2.Rd5#
- 2.Qe4#
- 1...e4
- 2.Rd5#
- 1...Qd6
- Tries
- 1.Bf7?
- threat
- 2.Rc4#
- 1...Sd6
- 2.Qxe5#
- 1...Qb5
- 2.Qxe5#
- 1...Bd5
- 2.Rxd5#
- 1...d5
- 2.Se6#
- 1...Sb6!
- threat
- 1.Bd6?
- threat
- 2.Qxe5#
- 1...Qxd6
- 2.Qxb4#
- 1...Be4
- 2.Qxe4#
- 1...Be3
- 2.Qxe3#
- 1...Bf6
- 2.Qe3#
- 1...e4
- 2.Rd5#
- 1...Bf4!
- threat
- 1.Qf2+?
- 1...Be3
- 2.Qxe3#
- 1...gxf2!
- 1...Be3
- 1.c3+?
- 1...bxc3
- 2.Qxc3#
- 1...Kxd3!
- 1...bxc3
- 1.cxd7?
- threat
- 2.Se6#
- 1...Rxd7
- 2.Qa1#
- 1...Qd6
- 2.Qxb4#
- 1...Qb6
- 2.Qxe5#
- 1...Bd5
- 2.Rxd5#
- 1...Ra6!
- threat
- 1.c7?
- threat
- 2.Qxe5#
- 1...Qxc7
- 2.Qxb4#
- 1...d6
- 2.Se6#
- 1...Be4
- 2.Qxe4#
- 1...Be3
- 2.Qxe3#
- 1...Bf6
- 2.Qe3#
- 1...e4
- 2.Rd5#
- 1...Bf4!
- threat
- 1.Bf7?
- Keys
- 1.Rd8!
- threat
- 2.Se6#
- 1...Bxd8
- 2.Qe3#
- 1...Qd6
- 2.Qxb4#
- 1...Sd6
- 2.Qxe5#
- 1...d6
- 2.Qxe5#
- 1...Bd5
- 2.Rxd5#
- 1...d5
- 2.Rc4#
- threat
- 1.Rd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- Q(j);N_GUARD::QAR2(A),XP(c)
- Q(j);N_GUARD::QAB1(A),XP(e)
- R(h);N_GUARD::QAB(A),XR(h)
- R(h);N_GUARD::QAB(A)
- B(a);N_GUARD::QAR1(A),XB(a)
- B(a);N_GUARD::R1(F),XB(a)
- B(f);N_GUARD::QAB1(A),XB(f)
- B(f);N_GUARD::QAB1(A)
- S(k);S_CUTQ(j)::QAB1(A),XP(e)
- P(e);S_CUTB(a)::R1(F)
- Tries
- Try
- B(D);
- Threat
- R1(F)
- Vars
- S(k);S_CUTQ(j)::QAB1(A),XP(e)
- Q(j);N_GUARD::QAB1(A),XP(e)
- B(a);N_GUARD::R1(F),XB(a)
- P(i);N_GUARD::S(H)
- Refutation
- S(k);
- Try
- B(K);
- Threat
- QAB1(A),XP(e)
- Vars
- Q(j);N_GUARD,XB(K)::QAR2(A),XP(c)
- B(a);N_GUARD::QAR1(A),XB(a)
- B(f);N_GUARD::QAB1(A),XB(f)
- B(f);N_GUARD::QAB1(A)
- P(e);S_CUTB(a)::R1(F)
- Refutation
- B(f);
- Try
- Q(A);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAB1(A),XB(f)
- Refutation
- P(b);XQ(A)
- Try
- P(C);CHECK
- Vars
- P(c);OGATE,XP(C)::QAB1(A),XP(c)
- Refutation
- K(d);P-FLIGHT,XP(E)
- Try
- P(G);XP(i)
- Threat
- S(H)
- Vars
- R(h);N_GUARD,P_PINS(H),XP(G)::QAB(A)
- Q(j);N_GUARD::QAR2(A),XP(c)
- Q(j);N_GUARD::QAB1(A),XP(e)
- B(a);N_GUARD::R1(F),XB(a)
- Refutation
- R(h);
- Try
- P(G);
- Threat
- QAB1(A),XP(e)
- Vars
- Q(j);N_GUARD,XP(G)::QAR2(A),XP(c)
- P(i);N_GUARD::S(H)
- B(a);N_GUARD::QAR1(A),XB(a)
- B(f);N_GUARD::QAB1(A),XB(f)
- B(f);N_GUARD::QAB1(A)
- P(e);S_CUTB(a)::R1(F)
- Refutation
- B(f);
- Try
- Actual
- R(J);P_PINP(i)
- Threat
- S(H)
- Vars
- B(f);N_GUARD,N_SPINP(i),XR(J)::QAB1(A)
- Q(j);N_GUARD,N_SPINP(i)::QAR2(A),XP(c)
- S(k);N_SPINP(i),S_CUTQ(j)::QAB1(A),XP(e)
- P(i);P_PINS(H),S_CUTQ(j)::QAB1(A),XP(e)
- B(a);N_GUARD,N_SPINP(i)::R1(F),XB(a)
- P(i);P_PINS(H)::R1(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).