MESON Chess Problem Database
Problem Display
PID: 198453 (3b2B1/1n1RP2K/3r1Q2/4R3/2pk1Pp1/3Np3/1p2pn2/2N1B2b w - - 0 1)
Pohjonen, Risto
Suomen Shakki, 1986
#2
10 + 11
| 5454 | Near Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Re6#
- 1...Be4+
- 2.Rf5#
- 1...Bd5
- 2.Re6#
- 1...Bxe7
- 2.Rexe7#
- 1...Sxd3
- 2.Sxe2#
- 1...Se4
- 2.Rd5#
- 1...cxd3
- 2.Sb3#
- 1...Rd5
- Tries
- 1.Sxf2?
- threat
- 2.Sxe2#
- 2.Ra5#
- 2.Rb5#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Be4+
- 2.Rf5#
- 1...b1Q+
- 2.Rf5#
- 1...b1B+
- 2.Rf5#
- 1...Bxe7
- 2.Sxe2#
- 2.Rd5#
- 1...bxc1Q
- 2.Ra5#
- 2.Rb5#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...bxc1S
- 2.Ra5#
- 2.Rb5#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...bxc1B
- 2.Ra5#
- 2.Rb5#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...bxc1R
- 2.Ra5#
- 2.Rb5#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Rd5
- 2.Rexd5#
- 1...Bd5
- 2.Rxd5#
- 1...Bf3
- 2.Ra5#
- 2.Rb5#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Ba5
- 2.Sxe2#
- 2.Rxa5#
- 2.Rb5#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Sa5
- 2.Sxe2#
- 2.Rxa5#
- 2.Rb5#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Sc5
- 2.Sxe2#
- 2.Re4#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...c3
- 2.Sxe2#
- 2.Sb3#
- 2.Ra5#
- 2.Rb5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...exf2!
- threat
- 1.Sc5?
- threat
- 2.Sxe2#
- 2.Se6#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Be4+
- 2.Rf5#
- 1...b1Q+
- 2.Rf5#
- 1...b1B+
- 2.Rf5#
- 1...Bxe7
- 2.Sxe2#
- 2.Se6#
- 2.Rd5#
- 1...bxc1Q
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...bxc1S
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...bxc1B
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...bxc1R
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Rd5
- 2.Se6#
- 2.Rexd5#
- 1...Bd5
- 2.Rxd5#
- 1...Bf3
- 2.Se6#
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Sd3
- 2.Sxe2#
- 2.Se6#
- 2.Rd5#
- 1...Se4
- 2.Sxe2#
- 2.Se6#
- 2.Rd5#
- 1...c3
- 2.Sxe2#
- 2.S1b3#
- 2.S5b3#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Sxc5!
- threat
- 1.Rxd6+?
- 1...Bd5
- 2.Ree6#
- 2.Rdxd5#
- 1...Sxd6!
- 1...Bd5
- 1.Qxd6+?
- 1...Bd5
- 2.Qxd5#
- 1...Sxd6!
- 1...Bd5
- 1.e8Q?
- threat
- 2.Re4#
- 2.Rd5#
- 2.Ree7#
- 1...Rxd7+
- 2.Re7#
- 1...Be4+
- 2.Rxe4#
- 1...Sxd3
- 2.Sxe2#
- 2.Rd5#
- 1...bxc1Q
- 2.Rd5#
- 1...bxc1S
- 2.Rd5#
- 1...bxc1B
- 2.Rd5#
- 1...bxc1R
- 2.Rd5#
- 1...cxd3
- 2.Sb3#
- 1...Rd5
- 2.Re4#
- 2.Rexd5#
- 2.Ree7#
- 1...Bd5
- 2.Re4#
- 2.Rxd5#
- 1...Be7
- 2.Rexe7#
- 1...Se4
- 2.Rxe4#
- 2.Rd5#
- 1...c3
- 2.Re4#
- 2.Ree7#
- 1...Bxf6!
- threat
- 1.e8R?
- threat
- 2.Re4#
- 2.Rd5#
- 2.Re5e7#
- 1...Rxd7+
- 2.R5e7#
- 1...Be4+
- 2.Rxe4#
- 1...Sxd3
- 2.Sxe2#
- 2.Rd5#
- 1...bxc1Q
- 2.Rd5#
- 1...bxc1S
- 2.Rd5#
- 1...bxc1B
- 2.Rd5#
- 1...bxc1R
- 2.Rd5#
- 1...cxd3
- 2.Sb3#
- 1...Rd5
- 2.Re4#
- 2.Rexd5#
- 2.Re5e7#
- 1...Bd5
- 2.Re4#
- 2.Rxd5#
- 1...Be7
- 2.Re5xe7#
- 1...Se4
- 2.Rxe4#
- 2.Rd5#
- 1...c3
- 2.Re4#
- 2.Re5e7#
- 1...Bxf6!
- threat
- 1.Sxf2?
- Keys
- 1.Bd2!
- threat
- 2.Rxe3#
- 1...Be4+
- 2.Rf5#
- 1...Bxe7
- 2.Rexe7#
- 1...Sxd3
- 2.Sxe2#
- 1...exd2
- 2.Rxe2#
- 1...cxd3
- 2.Sb3#
- 1...Bd5
- 2.Re6#
- 1...Se4
- 2.Rd5#
- threat
- 1.Bd2!
Anticipated by 21737(1920/I)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(i);::QAB(F)+R(E)
- B(a);CHECK,SBLOCK::QAB(F)+R(E)
- B(a);N_SPINR(i),SBLOCK::QAB(F)+R(E)
- B(k);OGATE,XP(H)::QAB(F)+R(E),XB(k)
- S(d);SBLOCK,XS(C)::S(A),XP(c)
- S(d);SBLOCK::QAB(F)+R(E),DCHECK
- P(f);N_GUARD,SBLOCK,XS(C)::S(A)
- Tries
- Try
- S(C);XS(d)
- Threat
- DUALS(7)
- Vars
- B(a);CHECK::QAB(F)+R(E)
- P(b);CHECK::QAB(F)+R(E)
- R(i);::QAB(F)+R(E),DCHECK,XR(i)
- B(a);N_SPINR(i)::QAB(F)+R(E),DCHECK,XB(a)
- Refutation
- P(e);XS(C)
- Try
- S(C);
- Threat
- DUALS(6)
- Vars
- B(a);CHECK::QAB(F)+R(E)
- P(b);CHECK::QAB(F)+R(E)
- B(a);N_SPINR(i)::QAB(F)+R(E),DCHECK,XB(a)
- Refutation
- S(j);XS(C)
- Try
- R(G);CHECK,XR(i)
- Refutation
- S(j);XR(G)
- Try
- Q(F);CHECK,XR(i)
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAR1(F),XB(a)
- Refutation
- S(j);P_SPINS(j),XQ(F)
- Try
- P(H);
- Threat
- DUALS(3)
- Vars
- R(i);CHECK,N_SPINR(i),XR(G)::QAB(F)+R(E)
- B(a);CHECK::QAB(F)+R(E),DCHECK,XB(a)
- P(b);XS(A)::QAB(F)+R(E),DCHECK
- P(f);N_GUARD,SBLOCK,XS(C)::S(A)
- B(k);::QAB(F)+R(E),XB(k)
- Refutation
- B(k);XQ(F)
- Try
- P(H);
- Threat
- DUALS(3)
- Vars
- R(i);CHECK,N_SPINR(i),XR(G)::QAB(F)+R(E)
- B(a);CHECK::QAB(F)+R(E),DCHECK,XB(a)
- P(b);XS(A)::QAB(F)+R(E),DCHECK
- P(f);N_GUARD,SBLOCK,XS(C)::S(A)
- B(k);::QAB(F)+R(E),XB(k)
- Refutation
- B(k);XQ(F)
- Try
- Actual
- B(B);
- Threat
- QAB(F)+R(E),XP(e)
- Vars
- B(a);CHECK,SBLOCK::QAB(F)+R(E)
- B(k);OGATE,XP(H)::QAB(F)+R(E),XB(k)
- S(d);SBLOCK,XS(C)::S(A),XP(c)
- P(e);OGATE,XB(B)::QAB(F)+R(E),XP(c)
- P(f);N_GUARD,SBLOCK,XS(C)::S(A)
- B(a);N_SPINR(i),SBLOCK::QAB(F)+R(E)
- S(d);SBLOCK::QAB(F)+R(E),DCHECK
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