MESON Chess Problem Database

Problem Display
PID: 93039 (2Q5/2K1B3/3p2p1/p1p1k3/r2pP1nR/7r/1Nn1NPP1/1Bb5 w - - 0 1)

Eriksson, Finn Olof

Tidskrift for Schack, 1938

2Q5/2K1B3/3p2p1/p1p1k3/r2pP1nR/7r/1Nn1NPP1/1Bb5

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qe6#
    • 1...Sce3
      • 2.f4#
    • 1...Sb4
      • 2.Sc4#
    • 1...Sge3
      • 2.Sd3#
    • 1...Sf6
      • 2.Bxd6#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Bxd6+?
      • 1...Kxe4
        • 2.Qe6#
      • 1...Kf6!
    • 1.Qe8?
      • threat
        • 2.Bg5#
        • 2.Bd8#
      • 1...Ke6
        • 2.Bg5#
        • 2.Bd8#
      • 1...Bg5
        • 2.Bxg5#
      • 1...Sf6
        • 2.Bxd6#
      • 1...g5
        • 2.Bxg5#
        • 2.Bd8#
      • 1...Kxe4!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Qe6#
      • 1...Sce3
        • 2.f4#
      • 1...Sb4
        • 2.Sc4#
      • 1...Sge3
        • 2.Sd3#
      • 1...Sf6
        • 2.Bxd6#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(i);P-FLIGHT,P_SPINS(b),XP(F)::QAR2(J)
    • S(b);S_CUTB(a)::P(D)
    • S(b);S_CUTR(d)::S(B)
    • S(f);S_CUTR(c)::S(B)
    • S(f);SBLOCK::B(I),XP(j)
    • P(k);N_GUARD::QAR1(J)
  • Tries
    • Try
      • B(I);CHECK,XP(j)
      • Vars
        • K(i);P-FLIGHT,P_SPINS(b),XP(F)::QAR2(J)
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR(J)+B(I),XB(a)
        • S(f);SBLOCK::QAR(J)+B(I),DCHECK,XP(j)
      • Refutation
        • K(i);P-FLIGHT,P_SPINS(b),XP(F)
  • Actual
    • Q(J);
    • Threat
      • QAR1(J)
    • Vars
      • K(i);P-FLIGHT,P_SPINS(b),XP(F)::QAR2(J)
      • S(b);S_CUTB(a)::P(D)
      • S(b);S_CUTR(d)::S(B)
      • S(f);S_CUTR(c)::S(B)
      • S(f);SBLOCK::B(I),XP(j)
      • P(j);::QAR1(J),XP(j)
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