MESON Chess Problem Database
Problem Display
PID: 72142 (8/B3Kp1Q/P3p3/N2kpbn1/1R6/8/n1pPBP2/1NR4r w - - 0 1)
Onkoud, Abdelaziz
Probleemblad, 2007
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Bd3
- 2.Qxd3#
- 1...Bh3
- 2.Bc4#
- 2.Rb5#
- 2.Qd3#
- 1...Be4
- 2.Bc4#
- 2.Rb5#
- 1...Bg4
- 2.Bc4#
- 2.Rb5#
- 2.Qd3#
- 1...Sxc1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sxb4
- 2.Sc3#
- 1...Se4
- 2.Bc4#
- 1...cxb1Q
- 2.Rc5#
- 1...cxb1S
- 2.Rc5#
- 1...cxb1B
- 2.Rc5#
- 1...cxb1R
- 2.Rc5#
- 1...e4
- 2.Rb5#
- 1...Bd3
- Tries
- 1.Bf3+?
- 1...Be4
- 2.Rb5#
- 1...Se4
- 2.Rb5#
- 1...e4
- 2.Rb5#
- 1...Sxf3!
- 1...Be4
- 1.Bb5?
- threat
- 2.Bc6#
- 1...Sxb4
- 2.Sc3#
- 1...e4!
- threat
- 1.Rxc2?
- threat
- 2.Rc5#
- 1...Bxc2
- 2.Bc4#
- 2.Rb5#
- 1...Sxb4
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Se4
- 2.Bc4#
- 1...Rc1!
- threat
- 1.Rg4?
- threat
- 2.Bc4#
- 1...Bd3
- 2.Qxd3#
- 1...e4!
- threat
- 1.Qxf5?
- threat
- 2.Bc4#
- 2.Rd4#
- 2.Rb5#
- 2.Qd3#
- 1...Sxc1
- 2.Sc3#
- 2.Bc4#
- 2.Rd4#
- 2.Rb5#
- 1...Sxb4
- 2.Sc3#
- 2.Bc4#
- 1...cxb1Q
- 2.Bc4#
- 2.Rc5#
- 2.Rd4#
- 1...cxb1B
- 2.Bc4#
- 2.Rc5#
- 2.Rd4#
- 2.Rb5#
- 1...cxb1R
- 2.Bc4#
- 2.Rc5#
- 2.Rd4#
- 2.Qd3#
- 1...Rh3
- 2.Bc4#
- 2.Rd4#
- 2.Rb5#
- 1...Rh4
- 2.Rb5#
- 1...Sc3
- 2.Sxc3#
- 2.Bc4#
- 2.Rd4#
- 2.Qd3#
- 1...Sf3
- 2.Bxf3#
- 2.Bc4#
- 2.Rb5#
- 2.Qe4#
- 1...Se4
- 2.Bc4#
- 2.Rd4#
- 2.Qxe4#
- 1...exf5!
- threat
- 1.Qg8?
- threat
- 2.Qa8#
- 2.Qd8#
- 1...Sxb4
- 2.Sc3#
- 1...e4
- 2.Rb5#
- 1...Se4
- 2.Bc4#
- 2.Qa8#
- 1...Rh8!
- threat
- 1.Qxh1+?
- 1...Be4
- 2.Bc4#
- 2.Rb5#
- 1...Se4
- 2.Bc4#
- 2.Rb5#
- 1...e4
- 2.Rb5#
- 1...Sf3!
- 1...Be4
- 1.Qh8?
- threat
- 2.Qa8#
- 2.Qd8#
- 1...Sxb4
- 2.Sc3#
- 1...Se4
- 2.Bc4#
- 2.Qa8#
- 1...e4
- 2.Bc4#
- 2.Rd4#
- 2.Rb5#
- 2.Qd4#
- 1...Rxh8!
- threat
- 1.d3?
- threat
- 2.Rb5#
- 1...Bxd3
- 2.Qxd3#
- 1...Sxb4
- 2.Sc3#
- 1...cxb1Q
- 2.Rc5#
- 1...cxb1R
- 2.Rc5#
- 1...Sc3
- 2.Sxc3#
- 1...Se4!
- threat
- 1.f3?
- threat
- 2.Bc4#
- 2.Rb5#
- 1...Sxb4
- 2.Sc3#
- 2.Bc4#
- 1...cxb1Q
- 2.Bc4#
- 2.Rc5#
- 1...cxb1R
- 2.Bc4#
- 2.Rc5#
- 1...e4
- 2.Rb5#
- 1...Rh4
- 2.Rb5#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Sxc3#
- 2.Bc4#
- 1...Se4
- 2.Bc4#
- 1...Sxf3!
- threat
- 1.Bf3+?
- Keys
- 1.Bd3!
- threat
- 2.Rb5#
- 1...Bxd3
- 2.Qxd3#
- 1...Sxb4
- 2.Sc3#
- 1...cxb1Q
- 2.Rc5#
- 1...cxb1R
- 2.Rc5#
- 1...Sc3
- 2.Sxc3#
- 1...Se4
- 2.Bc4#
- threat
- 1.Bd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- B(f);OGATE::QAR2(K),XB(f)
- S(b);N_GUARD,XR(B)::S(A)
- S(b);N_GUARD::S(A),XS(b)
- S(b);N_GUARD,XR(F)::S(A)
- S(g);SBLOCK::B(D)
- P(c);OGATE,XS(A)::R1(B)
- P(e);SBLOCK::R(F)
- Tries
- Try
- B(D);CHECK
- Vars
- B(f);P_SPINB(f)::R(F)
- S(g);P_SPINS(g)::R(F)
- P(e);P_SPINP(e)::R(F)
- Refutation
- S(g);XB(D)
- Try
- B(D);
- Threat
- B(D)
- Vars
- S(b);N_GUARD,XR(F)::S(A)
- Refutation
- P(e);
- Try
- R(B);XP(c)
- Threat
- R1(B)
- Vars
- S(b);N_GUARD,XR(F)::S(A)
- S(b);N_GUARD::S(A),XS(b)
- S(g);SBLOCK::B(D)
- Refutation
- R(a);
- Try
- R(F);
- Threat
- B(D)
- Vars
- B(f);OGATE::QAR2(K),XB(f)
- Refutation
- P(e);
- Try
- Q(K);P_PINP(e),XB(f)
- Threat
- DUALS(4)
- Vars
- R(a);::R(F)
- Refutation
- P(h);N_SPINP(e),XQ(K)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XR(F)::S(A)
- P(e);SBLOCK::R(F)
- Refutation
- R(a);
- Try
- Q(K);CHECK,XR(a)
- Vars
- P(e);P_SPINP(e)::R(F)
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XR(F)::S(A)
- Refutation
- R(a);XQ(K)
- Try
- P(C);
- Threat
- R(F)
- Vars
- B(f);OGATE,XP(C)::QAR2(K),XB(f)
- S(b);N_GUARD,XR(F)::S(A)
- P(c);OGATE,XS(A)::R1(B)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- S(g);
- Try
- P(E);
- Threat
- DUALS(2)
- Vars
- P(e);::R(F)
- R(a);::R(F)
- B(f);OGATE::QAR2(K),XB(f)
- S(g);::B(D)
- Refutation
- S(g);XP(E)
- Try
- Actual
- B(D);
- Threat
- R(F)
- Vars
- B(f);OGATE,XB(D)::QAR2(K),XB(f)
- S(b);N_GUARD,XR(F)::S(A)
- P(c);OGATE,XS(A)::R1(B)
- S(b);N_GUARD::S(A),XS(b)
- S(g);SBLOCK::B(D)
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