MESON Chess Problem Database
Problem Display
PID: 214429 (7N/3Kp2p/2Np4/3r1k1p/R2b3Q/5r2/B1R5/2B5 w - - 0 1)
Becker, C?
diagrammes, 1975
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qf4#
- 1...Rb3
- 2.Qf4#
- 1...Rc3
- 2.Qf4#
- 1...Rd3
- 2.Qf4#
- 1...Rg3
- 2.Qf4#
- 1...Rh3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Ra5
- 2.Be6#
- 1...Rb5
- 2.Be6#
- 1...Rc5
- 2.Be6#
- 1...Re5
- 2.Sxd4#
- 1...Ba1
- 2.Qg5#
- 1...Bg1
- 2.Qg5#
- 1...Bb2
- 2.Qg5#
- 1...Bf2
- 2.Qg5#
- 1...Bc3
- 2.Qg5#
- 1...Bc5
- 2.Qg5#
- 1...Be5
- 2.Sxe7#
- 2.Qg5#
- 1...Bb6
- 2.Qg5#
- 1...Bf6
- 2.Qe4#
- 1...Ba7
- 2.Qg5#
- 1...Bg7
- 2.Qg5#
- 1...Bxh8
- 2.Qg5#
- 1...e5
- 2.Se7#
- 1...Ra3
- Tries
- 1.Sxd4+?
- 1...Ke5
- 2.Qxe7#
- 1...Rxd4!
- 1...Ke5
- 1.Bxd5?
- threat
- 2.Be4#
- 2.Be6#
- 2.Qg5#
- 1...Bxh8
- 2.Be4#
- 2.Qg5#
- 1...Rg3
- 2.Be4#
- 2.Be6#
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Be3
- 2.Be4#
- 2.Be6#
- 1...Bf6
- 2.Be4#
- 2.Be6#
- 2.Qe4#
- 1...e6
- 2.Be4#
- 2.Bxe6#
- 2.Qg5#
- 1...h6
- 2.Be4#
- 2.Be6#
- 1...Re3!
- threat
- 1.Rxd4?
- threat
- 2.Qg5#
- 1...Rxd4
- 2.Be6#
- 1...Re3
- 2.Rf4#
- 2.Qf4#
- 1...Rg3
- 2.Rf4#
- 2.Qf4#
- 1...Rf4
- 2.Rxf4#
- 2.Qxf4#
- 1...h6!
- threat
- 1.Qxh5+?
- 1...Kf6
- 2.Qf7#
- 1...Ke4!
- 1...Kf6
- 1.Sxd4+?
- Keys
- 1.Bb1!
- threat
- 2.Rf2#
- 1...Bxh8
- 2.Qg5#
- 1...Rf2
- 2.Rd2#
- 2.Re2#
- 2.Rxf2#
- 1...Rd3
- 2.Qf4#
- 1...Rb5
- 2.Rc5#
- 1...Rc5
- 2.Rxc5#
- 1...Re5
- 2.Sxd4#
- 1...Ba1
- 2.Qg5#
- 1...Bg1
- 2.Qg5#
- 1...Bb2
- 2.Qg5#
- 1...Bf2
- 2.Qg5#
- 1...Bc3
- 2.Qg5#
- 1...Be3
- 2.Rc5#
- 1...Bc5
- 2.Qg5#
- 1...Be5
- 2.Sxe7#
- 2.Qg5#
- 1...Bb6
- 2.Qg5#
- 1...Bf6
- 2.Qe4#
- 1...Ba7
- 2.Qg5#
- 1...Bg7
- 2.Qg5#
- 1...e5
- 2.Se7#
- threat
- 1.Bb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::QAR1(E)
- R(a);N_GUARD::QAR1(E),XR(a)
- R(c);OGATE::B(B)
- R(c);N_GUARD,SBLOCK::S(F),XB(b)
- B(b);::QAR1(E)
- B(b);SBLOCK::QAB1(E)
- B(b);XS(H)::QAR1(E)
- P(g);SBLOCK::S(F)
- Tries
- Try
- S(F);CHECK,XB(b)
- Vars
- K(d);P-FLIGHT::QAR2(E),XP(g)
- Refutation
- R(c);XS(F)
- Try
- B(B);XR(c)
- Threat
- DUALS(3)
- Vars
- R(a);N_GUARD::QAR1(E),XR(a)
- Refutation
- R(a);
- Try
- R(D);XB(b)
- Threat
- QAR1(E)
- Vars
- R(c);OGATE,XR(D)::B(B)
- Refutation
- P(h);
- Try
- Q(E);CHECK,XP(e)
- Vars
- K(d);P-FLIGHT::QAR1(E)
- Refutation
- K(d);P_SPINB(b),S_FLIGHT
- Try
- Actual
- B(B);
- Threat
- B(B)+R(C)
- Vars
- B(b);XS(H)::QAR1(E)
- R(a);N_GUARD::QAR1(E)
- R(c);::B(B)+R(C),DCHECK
- R(c);::B(B)+R(C),DCHECK,XR(c)
- R(c);N_GUARD,SBLOCK::S(F),XB(b)
- B(b);::QAR1(E)
- B(b);S_CUTR(a)::B(B)+R(C)
- B(b);SBLOCK::QAB1(E)
- P(g);SBLOCK::S(F)
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