MESON Chess Problem Database
Problem Display
PID: 197673 (n4Q2/7r/3Nkbb1/1BR2p1r/6n1/3R3p/8/1K6 w - - 0 1)
Sokka, Hannu Erkki Juhani
Suomen Shakki, 1986
#2
6 + 9
SOLUTION
- SOUND
- Sets
- 1...Rd7
- 2.Bc4#
- 1...Rd7
- Tries
- 1.Se4?
- threat
- 2.Bc4#
- 2.Rd6#
- 1...fxe4
- 2.Rd6#
- 1...Rb7
- 2.Rd6#
- 1...Rd7
- 2.Bxd7#
- 1...Be5
- 2.Bc4#
- 1...Be7
- 2.Bc4#
- 2.Bd7#
- 1...Se3
- 2.Rd6#
- 2.Qxf6#
- 1...Se5
- 2.Rd6#
- 2.Qxf6#
- 1...Sb6
- 2.Rd6#
- 1...Sc7
- 2.Rd6#
- 1...f4
- 2.Rd6#
- 1...Bd4!
- threat
- 1.Sb7?
- threat
- 2.Bc4#
- 2.Rd6#
- 1...Rxb7
- 2.Rd6#
- 1...Rd7
- 2.Bxd7#
- 1...Bd4
- 2.Sd8#
- 1...Be5
- 2.Sd8#
- 2.Bc4#
- 1...Be7
- 2.Bc4#
- 2.Bd7#
- 1...Se3
- 2.Rd6#
- 1...Se5
- 2.Rd6#
- 1...Sb6
- 2.Rd6#
- 1...Sc7
- 2.Rd6#
- 1...f4!
- threat
- 1.Sf7?
- threat
- 2.Bc4#
- 2.Bd7#
- 2.Rd6#
- 2.Rc6#
- 1...Rxf7
- 2.Bc4#
- 2.Rd6#
- 2.Qd6#
- 1...Bxf7
- 2.Bc4#
- 2.Bd7#
- 2.Rd6#
- 2.Qd6#
- 1...Ba1
- 2.Sd8#
- 2.Rd6#
- 2.Rc6#
- 1...Bb2
- 2.Sd8#
- 2.Rd6#
- 2.Rc6#
- 1...Bc3
- 2.Sd8#
- 2.Rd6#
- 2.Rc6#
- 1...Bd4
- 2.Sd8#
- 1...Bh4
- 2.Rd6#
- 2.Rc6#
- 1...Be5
- 2.Sd8#
- 1...Bg5
- 2.Rd6#
- 2.Rc6#
- 1...Bg7
- 2.Sd8#
- 2.Rd6#
- 2.Rc6#
- 1...Bd8
- 2.Sxd8#
- 2.Rd6#
- 2.Rc6#
- 1...Bh8
- 2.Sd8#
- 2.Rd6#
- 2.Rc6#
- 1...Se3
- 2.Bd7#
- 2.Rd6#
- 2.Rc6#
- 1...Se5
- 2.Rd6#
- 1...Sb6
- 2.Rd6#
- 2.Rc6#
- 1...Sc7
- 2.Bd7#
- 2.Rd6#
- 2.Rc6#
- 1...f4
- 2.Bd7#
- 1...Be7!
- threat
- 1.Qc8+?
- 1...Rd7
- 2.Qxd7#
- 1...Ke7!
- 1...Rd7
- 1.Se4?
- Keys
- 1.Sxf5!
- threat
- 2.Bc4#
- 2.Rd6#
- 1...Rxf5
- 2.Rd6#
- 1...Bxf5
- 2.Bc4#
- 1...Se5
- 2.Sd4#
- 1...Rb7
- 2.Rd6#
- 1...Rd7
- 2.Bxd7#
- 1...Bd4
- 2.Sxd4#
- 1...Be5
- 2.Bc4#
- 1...Be7
- 2.Bc4#
- 2.Bd7#
- 1...Se3
- 2.Rd6#
- 1...Sb6
- 2.Rd6#
- 1...Sc7
- 2.Rd6#
- threat
- 1.Sxf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- R(h);SBLOCK::B(C)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(c);XS(E)::R1(B)
- R(h);P_PINB(C)::R1(B)
- R(h);N_GUARD::B(C),XR(h)
- B(f);::B(C)
- S(i);::R1(B)
- P(c);::R1(B)
- Refutation
- B(f);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(h);P_PINB(C),XS(E)::R1(B)
- R(h);N_GUARD::B(C),XR(h)
- B(f);N_GUARD::S(E)
- S(b);::R1(B)
- S(i);::R1(B)
- Refutation
- P(c);P_PINR(B)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- B(f);N_GUARD::S(E)
- S(b);::R1(B)
- P(c);P_PINR(B)::B(C)
- Refutation
- B(f);
- Try
- Q(F);CHECK
- Vars
- R(h);N_GUARD,P_SPINR(h)::QAB1(F),XR(h)
- Refutation
- K(e);P-FLIGHT
- Try
- Actual
- S(E);XP(c)
- Threat
- DUALS(2)
- Vars
- R(d);XS(E)::R1(B)
- B(g);P_PINR(B),XS(E)::B(C)
- S(b);S_CUTB(f)::S(E)
- R(h);P_PINB(C)::R1(B)
- R(h);N_GUARD::B(C),XR(h)
- B(f);N_GUARD::S(E),XB(f)
- B(f);::B(C)
- S(b);::R1(B)
- S(i);::R1(B)
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