MESON Chess Problem Database
Problem Display
PID: 70859 (1K6/2Npn3/Q1b5/1R6/3r1kBP/2BP3R/5NP1/5n2 w - - 0 1)
Hartong, Jan
2nd Prize, L'Italia Scacchistica, 1951
#2
11 + 6
| 136 | Problem Observer | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rxd3
- 2.Be5#
- 1...Ra4
- 2.Be5#
- 1...Rb4
- 2.Be5#
- 1...Rc4
- 2.Be5#
- 1...Re4
- 2.Rf3#
- 1...Rd5
- 2.Rf3#
- 1...Rd6
- 2.Be5#
- 1...Bxg2
- 2.Qh6#
- 1...Bf3
- 2.Rxf3#
- 2.Qh6#
- 1...Be4
- 2.Qh6#
- 1...Bd5
- 2.Qd6#
- 1...Bb7
- 2.Qh6#
- 1...Ba8
- 2.Qh6#
- 1...Sd2
- 2.Bxd2#
- 1...Sh2
- 2.Bd2#
- 1...Se3
- 2.g3#
- 1...Sg3
- 2.Bd2#
- 1...Sf5
- 2.Rxf5#
- 1...Sg6
- 2.Rf5#
- 1...Sc8
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...d6
- 2.Se6#
- 1...Rxd3
- Tries
- 1.Bd2+?
- 1...Se3
- 2.Bxe3#
- 2.g3#
- 1...Sxd2!
- 1...Se3
- 1.Bxd4?
- threat
- 2.Be5#
- 1...Bxb5
- 2.Rf3#
- 2.Qd6#
- 2.Qh6#
- 1...Bf3
- 2.Rxf3#
- 2.Qd6#
- 2.Qh6#
- 1...Bd5
- 2.Qd6#
- 2.Qh6#
- 1...Sd5
- 2.Rf3#
- 1...Sg6
- 2.Rf5#
- 1...d5
- 2.Se6#
- 2.Rf3#
- 1...d6
- 2.Se6#
- 1...Sg3!
- threat
- 1.Rh5?
- 1...Rxd3
- 2.Be5#
- 1...Bxg2
- 2.Qh6#
- 1...Bf3
- 2.Rxf3#
- 2.Qh6#
- 1...Sg3
- 2.Bd2#
- 1...Sf5
- 2.Rxf5#
- 1...Ra4
- 2.Be5#
- 1...Rc4
- 2.Be5#
- 1...Re4
- 2.Rf3#
- 1...Rd5
- 2.Rf3#
- 1...Rd6
- 2.Be5#
- 1...Ba4
- 2.Rf3#
- 2.Qh6#
- 1...Be4
- 2.Qh6#
- 1...Bb5
- 2.Rf3#
- 2.Qh6#
- 1...Bd5
- 2.Qd6#
- 2.Qh6#
- 1...Bb7
- 2.Qh6#
- 1...Ba8
- 2.Qh6#
- 1...Sd2
- 2.Bxd2#
- 1...Sh2
- 2.Bd2#
- 1...Se3
- 2.g3#
- 1...Sd5
- 2.Rf3#
- 2.Rf5#
- 1...Sg6
- 2.Rf5#
- 1...Sc8
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...d5
- 2.Se6#
- 2.Rf3#
- 1...d6
- 2.Se6#
- 1...Rb4+!
- 1...Rxd3
- 1.Qxc6?
- threat
- 2.Rf3#
- 2.Qf3#
- 2.Qh6#
- 1...Rxd3
- 2.Be5#
- 2.Qe4#
- 2.Qh6#
- 1...dxc6
- 2.Se6#
- 2.Rf3#
- 1...Sg3
- 2.Bd2#
- 2.Qf3#
- 2.Qh6#
- 1...Sd5
- 2.Qd6#
- 1...d5
- 2.Qd6#
- 1...Re4
- 2.Rf3#
- 2.Qxe4#
- 2.Qh6#
- 1...Rd5
- 2.Rf3#
- 1...Rd6
- 2.Be5#
- 2.Rf3#
- 2.Qf3#
- 2.Qe4#
- 2.Qxd6#
- 1...Sd2
- 2.Bxd2#
- 2.Qh6#
- 1...Sh2
- 2.Bd2#
- 2.Qh6#
- 1...Sf5
- 2.Rf3#
- 2.Rxf5#
- 2.Qf3#
- 1...Sg6
- 2.Rf3#
- 2.Rf5#
- 2.Qf3#
- 2.Qf6#
- 1...Sg8
- 2.Rf3#
- 2.Rf5#
- 2.Qf3#
- 1...d6
- 2.Se6#
- 2.Rf3#
- 2.Qf3#
- 1...Sxc6+!
- threat
- 1.g3+?
- 1...Sxg3
- 2.Bd2#
- 1...Ke3!
- 1...Sxg3
- 1.Bd2+?
- Keys
- 1.Qb6!
- 1...Rxd3
- 2.Be5#
- 1...Bxg2
- 2.Qh6#
- 1...Bxb5
- 2.Qxd4#
- 1...Bf3
- 2.Rxf3#
- 2.Qh6#
- 1...Bd5
- 2.Qd6#
- 1...Sg3
- 2.Bd2#
- 1...Sd5
- 2.Qxd4#
- 1...d5
- 2.Qxd4#
- 1...Ra4
- 2.Be5#
- 1...Rb4
- 2.Be5#
- 1...Rc4
- 2.Be5#
- 1...Re4
- 2.Rf3#
- 1...Rd5
- 2.Rf3#
- 1...Rd6
- 2.Be5#
- 1...Be4
- 2.Qh6#
- 1...Bb7
- 2.Qh6#
- 1...Ba8
- 2.Qh6#
- 1...Sd2
- 2.Bxd2#
- 1...Sh2
- 2.Bd2#
- 1...Se3
- 2.g3#
- 1...Sf5
- 2.Rxf5#
- 1...Sg6
- 2.Rf5#
- 1...Sc8
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...d6
- 2.Se6#
- 1...Rxd3
- 1.Qb6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(b);OGATE,XP(D)::B(C)
- R(b);OGATE::B(C)
- R(b);OGATE,P_PINR(H)::B(C)
- R(b);S_CUTB(d)::R1(E)
- B(d);OGATE,XP(B)::QAB(I)
- B(d);OGATE::QAB(I)
- S(a);N_GUARD::B(C),XS(a)
- S(a);N_GUARD::B(C)
- S(a);N_GUARD,SBLOCK::P(B)
- S(f);N_GUARD::R1(H),XS(f)
- S(f);N_GUARD::R1(H)
- P(e);N_GUARD::S(J)
- Tries
- Try
- B(C);CHECK
- Refutation
- S(a);XB(C)
- Try
- B(C);XR(b)
- Threat
- B(C)
- Vars
- S(f);S_CUTB(d)::R1(E)
- S(f);N_GUARD::R1(H)
- P(e);N_GUARD::S(J)
- Refutation
- S(a);
- Try
- R(H);
- Vars
- R(b);OGATE,XP(D)::B(C)
- B(d);OGATE,XP(B)::QAB(I)
- S(a);N_GUARD::B(C)
- S(f);N_GUARD::R1(H),XS(f)
- R(b);OGATE::B(C)
- R(b);S_CUTB(d)::R1(E)
- B(d);OGATE::QAB(I)
- S(a);N_GUARD::B(C),XS(a)
- S(a);N_GUARD,SBLOCK::P(B)
- S(f);N_GUARD::R1(H)
- P(e);N_GUARD::S(J)
- Refutation
- R(b);CHECK
- Try
- Q(I);XB(d)
- Threat
- DUALS(3)
- Vars
- S(f);S_CUTR(b)::QAB(I)
- P(e);S_CUTR(b)::QAB(I)
- R(b);::R1(E)
- Refutation
- S(f);CHECK,XQ(I)
- Try
- P(B);CHECK
- Vars
- S(a);XP(B)::B(C)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- Q(I);
- Vars
- R(b);OGATE,XP(D)::B(C)
- B(d);OGATE,XP(B)::QAB(I)
- B(d);N_GUARD,XR(H)::QAR2(I),XR(b)
- B(d);OGATE::QAB(I)
- S(a);N_GUARD::B(C)
- S(f);S_CUTB(d)::QAR2(I),XR(b)
- P(e);S_CUTB(d)::QAR2(I),XR(b)
- R(b);OGATE::B(C)
- R(b);S_CUTB(d)::R1(E)
- S(a);N_GUARD::B(C),XS(a)
- S(a);N_GUARD,SBLOCK::P(B)
- S(f);N_GUARD::R1(H),XS(f)
- S(f);N_GUARD::R1(H)
- P(e);N_GUARD::S(J)
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