MESON Chess Problem Database
Problem Display
PID: 71995 (1q1R4/6nK/Q1N5/1nB4R/1bk2r2/1b1p1B2/5r2/3N4 w - - 0 1)
Anonymous
Original for 08. WCCT, 2007
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxf3
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Rf6
- 2.Rd4#
- 1...Rf7
- 2.Rd4#
- 1...Rf8
- 2.Rd4#
- 1...Ba3
- 2.Sa5#
- 1...Bc3
- 2.Se3#
- 1...Ba5
- 2.Sxa5#
- 1...Bxc5
- 2.Bd5#
- 1...Rxf3
- Tries
- 1.Se5+?
- 1...Kxc5
- 2.Qc6#
- 1...Qxe5!
- 1...Kxc5
- 1.Bxb4?
- threat
- 2.Se3#
- 2.Bd5#
- 2.Rc5#
- 1...Qxd8
- 2.Se3#
- 2.Rc5#
- 2.Qxb5#
- 1...R2xf3
- 2.Sb2#
- 2.Rc5#
- 1...R4xf3
- 2.Rc5#
- 2.Rd4#
- 1...Bxd1
- 2.Bd5#
- 1...Sxh5
- 2.Se3#
- 2.Bd5#
- 1...Ba2
- 2.Bd5#
- 1...Bc2
- 2.Bd5#
- 1...Ba4
- 2.Bd5#
- 1...Qd6
- 2.Se3#
- 2.Qxb5#
- 1...Qa7
- 2.Bd5#
- 2.Qxb5#
- 1...Qb6
- 2.Bd5#
- 1...Re2
- 2.Bd5#
- 2.Rc5#
- 1...Rh2
- 2.Se3#
- 2.Bd5#
- 1...Rd4
- 2.Se3#
- 2.Rc5#
- 2.Rxd4#
- 1...Re4
- 2.Rc5#
- 1...Rh4
- 2.Se3#
- 2.Bd5#
- 1...Rf5
- 2.Se3#
- 2.Rd4#
- 1...Sf5
- 2.Bd5#
- 1...Se6
- 2.Se3#
- 2.Bd5#
- 1...d2
- 2.Sb2#
- 2.Se3#
- 2.Rc5#
- 1...Qe5!
- threat
- 1.Qa4?
- threat
- 2.Sa5#
- 2.Qxb4#
- 1...Qxd8
- 2.Qxb4#
- 1...Bxd1
- 2.Qxb4#
- 1...Sxh5
- 2.Qxb4#
- 1...Qe5
- 2.Qxb4#
- 1...Rf5
- 2.Qxb4#
- 1...Sf5
- 2.Qxb4#
- 1...Qa7
- 2.Qxb4#
- 1...Qc7
- 2.Qxb4#
- 1...Qb6
- 2.Qxb4#
- 1...Qa8
- 2.Qxb4#
- 1...Sa3
- 2.Sa5#
- 1...Sc3
- 2.Se3#
- 2.Sa5#
- 1...Sd4
- 2.Sa5#
- 1...Sd6
- 2.Sa5#
- 1...Sa7
- 2.Sa5#
- 1...Sc7
- 2.Sa5#
- 1...Bxa4!
- threat
- 1.Se5+?
- Keys
- 1.Qa5!
- threat
- 2.Qxb4#
- 1...Bxa5
- 2.Sxa5#
- 1...Bxc5
- 2.Bd5#
- 1...Be1
- 2.Se3#
- 1...Bd2
- 2.Sb2#
- 1...Ba3
- 2.Se3#
- 1...Bc3
- 2.Se3#
- 1...Sa3
- 2.Bd5#
- 1...Sc3
- 2.Se3#
- 1...Sd4
- 2.Bd5#
- 1...Sd6
- 2.Se5#
- 2.Bd5#
- 1...Sa7
- 2.Bd5#
- 1...Sc7
- 2.Se5#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 7
- REMOVED MATES = 5
- Sets
- R(f);N_GUARD,XB(B)::R1(H)
- R(f);N_GUARD::R1(H),XR(f)
- R(f);N_GUARD::R1(H)
- B(d);N_GUARD::S(F)
- B(d);SBLOCK::S(A)
- B(d);N_GUARD::S(F),XB(d)
- B(d);SBLOCK,XB(C)::B(B)
- Tries
- Try
- S(F);CHECK
- Vars
- K(e);N_SPINS(g),P-FLIGHT,XB(C)::QAR1(E)
- Refutation
- Q(i);XS(F)
- Try
- B(C);XB(d)
- Threat
- DUALS(3)
- Vars
- B(b);XS(A)::B(B)
- B(b);::B(B)
- Q(i);::B(B)
- R(f);::R1(D)
- S(h);::B(B)
- Refutation
- Q(i);
- Try
- Q(E);N_PINS(g),P_PINB(d)
- Threat
- DUALS(2)
- Vars
- Q(i);XR(H)::QAR1(E),XB(d)
- B(b);XS(A)::QAR1(E),XB(d)
- S(h);XR(D)::QAR1(E),XB(d)
- Q(i);::QAR1(E),XB(d)
- R(f);::QAR1(E),XB(d)
- S(h);::QAR1(E),XB(d)
- S(g);::S(F)
- Refutation
- B(b);N_SPINB(d),XQ(E)
- Try
- Actual
- Q(E);N_PINS(g)
- Threat
- QAR1(E),XB(d)
- Vars
- B(d);XQ(E)::S(F),XB(d)
- B(d);SBLOCK,XB(C)::B(B)
- B(d);::S(A)
- B(d);S_CUTR(a)::S(A)
- S(g);::B(B)
- S(g);SBLOCK::S(A)
- S(g);S_CUTQ(i)::S(F)
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