MESON Chess Problem Database
Problem Display
PID: 74369 (7B/2pN3b/8/1p1R4/2k3P1/Pr2nQ1K/B6P/n1r5 w - - 0 1)
Cristoffanini, Guido
Sp. HM., L'Italia Scacchistica, 1926
#2
9 + 8
| 133 | The Problemist Supplement | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Se5#
- 2.Rd4#
- 1...Bd3
- 2.Rc5#
- 1...Be4
- 2.Qxe4#
- 1...Bg8
- 2.Qe4#
- 1...Sd1
- 2.Se5#
- 2.Rd4#
- 2.Rc5#
- 1...Sf1
- 2.Se5#
- 2.Rd4#
- 2.Rc5#
- 1...Sc2
- 2.Se5#
- 2.Rc5#
- 1...Sg2
- 2.Se5#
- 2.Rd4#
- 2.Rc5#
- 1...Sxg4
- 2.Rd4#
- 2.Rc5#
- 1...Sf5
- 2.Se5#
- 2.Rc5#
- 2.Qd3#
- 1...c5
- 2.Sb6#
- 1...c6
- 2.Sb6#
- 1...Rc3
- Tries
- 1.Bxa1?
- threat
- 2.Se5#
- 2.Rd4#
- 1...Sxg4
- 2.Bxb3#
- 2.Rd4#
- 2.Rc5#
- 2.Qxb3#
- 1...Sxd5
- 2.Bxb3#
- 2.Qxb3#
- 1...Be4
- 2.Rd4#
- 2.Qxe4#
- 1...Rd1
- 2.Se5#
- 1...Rc3
- 2.Se5#
- 1...Sc2
- 2.Se5#
- 2.Bxb3#
- 2.Rc5#
- 2.Qxb3#
- 1...Sf5
- 2.Se5#
- 2.Bxb3#
- 2.Rc5#
- 2.Qxb3#
- 2.Qd3#
- 1...b4
- 2.Se5#
- 1...c5
- 2.Se5#
- 2.Sb6#
- 1...Rxa1!
- threat
- 1.Bb2?
- threat
- 2.Se5#
- 2.Rd4#
- 1...Sxg4
- 2.Rd4#
- 2.Rc5#
- 1...Be4
- 2.Rd4#
- 2.Qxe4#
- 1...Rd1
- 2.Se5#
- 1...Rc3
- 2.Se5#
- 1...Sac2
- 2.Se5#
- 1...Sec2
- 2.Se5#
- 2.Rc5#
- 1...Sf5
- 2.Se5#
- 2.Rc5#
- 2.Qd3#
- 1...b4
- 2.Se5#
- 1...c5
- 2.Se5#
- 2.Sb6#
- 1...Sxd5!
- threat
- 1.Rd6?
- threat
- 2.Qc6#
- 1...Sxg4
- 2.Rd4#
- 2.Rc6#
- 1...Be4
- 2.Qxe4#
- 1...Sd1
- 2.Rd4#
- 2.Rc6#
- 1...Sf1
- 2.Rd4#
- 2.Rc6#
- 1...Sec2
- 2.Rc6#
- 2.Qc3#
- 1...Sg2
- 2.Rd4#
- 2.Rc6#
- 1...Sd5
- 2.Rc6#
- 1...Sf5
- 2.Rc6#
- 2.Qd3#
- 1...c5
- 2.Sb6#
- 1...c6
- 2.Qxc6#
- 1...cxd6!
- threat
- 1.Qe2+?
- 1...Bd3
- 2.Rc5#
- 2.Qxd3#
- 1...Kxd5!
- 1...Bd3
- 1.Qxe3?
- threat
- 2.Rd4#
- 2.Rc5#
- 1...Rd1
- 2.Rc5#
- 1...Bd3
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 2.Qxd3#
- 1...Sc2
- 2.Bxb3#
- 2.Rc5#
- 2.Qxb3#
- 1...b4
- 2.Rc5#
- 1...c5
- 2.Sb6#
- 2.Rxc5#
- 1...Kxd5!
- threat
- 1.Qf4+?
- 1...Be4
- 2.Qxe4#
- 1...Kxd5!
- 1...Be4
- 1.Bxa1?
- Keys
- 1.Rd2!
- threat
- 2.Qc6#
- 1...Sxg4
- 2.Rd4#
- 1...Be4
- 2.Qxe4#
- 1...Sd1
- 2.Rd4#
- 1...Sf1
- 2.Rd4#
- 1...Sec2
- 2.Qc3#
- 1...Sg2
- 2.Rd4#
- 1...Sd5
- 2.Rd4#
- 1...Sf5
- 2.Qd3#
- 1...c5
- 2.Sb6#
- 1...c6
- 2.Qxc6#
- threat
- 1.Rd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 7
- REMOVED MATES = 2
- Sets
- B(h);SBLOCK::R1(G)
- B(h);N_GUARD::QAR2(D),XB(h)
- B(h);N_GUARD::QAR2(D)
- P(g);N_GUARD::S(H)
- Tries
- Try
- B(I);XS(a)
- Threat
- DUALS(2)
- Vars
- R(b);::S(H)
- P(f);::S(H)
- Refutation
- R(b);XB(I)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- R(b);::S(H)
- S(a);::S(H)
- P(f);::S(H)
- Refutation
- S(d);P_PINQ(D),XR(G)
- Try
- R(G);
- Threat
- QAR2(D)
- Vars
- B(h);N_GUARD::QAR2(D),XB(h)
- S(d);P_PINQ(D)::R(G)
- P(g);N_GUARD,SBLOCK::S(H)
- P(g);::QAR2(D),XP(g)
- Refutation
- P(g);XR(G)
- Try
- Q(D);CHECK
- Refutation
- K(e);S_FLIGHT,XR(G)
- Try
- Q(D);P_SPINQ(D),XS(d)
- Threat
- DUALS(2)
- Vars
- R(b);::R1(G)
- P(f);::R1(G)
- Refutation
- K(e);S_FLIGHT,XR(G)
- Try
- Q(D);CHECK
- Vars
- B(h);N_GUARD,P_SPINB(h)::QAR2(D),XB(h)
- Refutation
- K(e);S_FLIGHT,XR(G)
- Try
- Actual
- R(G);
- Threat
- QAR2(D)
- Vars
- S(d);P_PINQ(D),XP(F)::R1(G)
- B(h);N_GUARD::QAR2(D),XB(h)
- S(d);P_PINQ(D)::R1(G)
- S(d);OGATE,P_PINQ(D)::QAR1(D)
- S(d);OGATE,P_PINQ(D)::QAB1(D)
- P(g);N_GUARD,SBLOCK::S(H)
- P(g);::QAR2(D),XP(g)
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