MESON Chess Problem Database

Problem Display
PID: 16968 (6Nb/qpPPP3/RnrkNnbR/B2p4/1Pp2P2/4Q3/8/6K1 w - - 0 1)

Hassberg, Eric Manfred

5th Comm., BCPS 052. Ty., 1943-1944

6Nb/qpPPP3/RnrkNnbR/B2p4/1Pp2P2/4Q3/8/6K1

#2

12 + 10

70 American Chess Problemist 1950

SOLUTION

  • SOUND
  • Sets
    • 1...Sbxd7
      • 2.c8S#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qe5#
      • 1...Kxc7
        • 2.d8Q#
      • 1...Rxc7
        • 2.Qe6#
      • 1...Sbxd7
        • 2.Qe6#
        • 2.c8S#
      • 1...Sfxd7
        • 2.e8S#
      • 1...Sxg8
        • 2.e8S#
      • 1...Be4
        • 2.e8S#
      • 1...Se4
        • 2.e8S#
      • 1...Sg4
        • 2.e8S#
      • 1...Sh5
        • 2.e8S#
      • 1...Sh7
        • 2.e8S#
      • 1...Se8
        • 2.dxe8S#
      • 1...Rxc5!
    • 1.d8Q+?
      • 1...Sbd7
        • 2.c8S#
      • 1...Sfd7!
    • 1.d8R+?
      • 1...Sbd7
        • 2.c8S#
      • 1...Sfd7!
  • Keys
    • 1.Sf8!
      • threat
        • 2.Qe5#
      • 1...Kxc7
        • 2.d8Q#
      • 1...Rxc7
        • 2.Qe6#
      • 1...Sbxd7
        • 2.c8S#
      • 1...Sfxd7
        • 2.e8S#
      • 1...Sxg8
        • 2.e8S#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Be4
        • 2.e8S#
      • 1...Sa4
        • 2.c8S#
      • 1...Sa8
        • 2.c8S#
      • 1...Sc8
        • 2.dxc8S#
      • 1...Se4
        • 2.e8S#
      • 1...Sg4
        • 2.e8S#
      • 1...Sh5
        • 2.e8S#
      • 1...Sh7
        • 2.e8S#
      • 1...Se8
        • 2.dxe8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,P_PINQ(B),P_SPINR(d),SBLOCK,XP(J)::P=S
  • Tries
    • Try
      • S(G);
      • Threat
        • QAB1(B)
      • Vars
        • K(e);P_SPINS(c),S_FLIGHT,XP(I)::P=Q
        • R(d);P_SPINS(c),SBLOCK,XP(I)::QAR1(B)
        • S(f);N_GUARD,P_SPINB(g),XP(J)::P=S
        • S(f);N_GUARD,P_SPINB(g),XS(L)::P=S
        • B(g);N_GUARD,P_SPINS(f)::P=S
        • S(f);N_GUARD,P_SPINB(g)::P=S
        • S(f);OGATE,P_SPINB(g)::PXS(f)=S
      • Refutation
        • R(d);P_SPINS(c),XS(G)
    • Try
      • P(J);CHECK
      • Vars
        • S(c);N_GUARD,P_PINQ(B),P_SPINR(d),P_SPINS(c),S_CUTS(f)::P=S
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • P(J);CHECK
      • Vars
        • S(c);N_GUARD,P_PINQ(B),P_SPINR(d),P_SPINS(c),S_CUTS(f)::P=S
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • S(G);
    • Threat
      • QAB1(B)
    • Vars
      • K(e);P_SPINS(c),S_FLIGHT,XP(I)::P=Q
      • R(d);P_SPINS(c),SBLOCK,XP(I)::QAR1(B)
      • S(c);N_GUARD,P_PINQ(B),P_SPINR(d),XP(J)::P=S
      • S(f);N_GUARD,P_SPINB(g),XP(J)::P=S
      • S(f);N_GUARD,P_SPINB(g),XS(L)::P=S
      • R(d);N_GUARD,P_SPINS(c)::QAB1(B),XR(d)
      • B(g);N_GUARD,P_SPINS(f)::P=S
      • S(c);N_GUARD,P_PINQ(B),P_SPINR(d)::P=S
      • S(c);OGATE,P_PINQ(B),P_SPINR(d)::PXS(c)=S
      • S(f);N_GUARD,P_SPINB(g)::P=S
      • S(f);OGATE,P_SPINB(g)::PXS(f)=S
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