MESON Chess Problem Database

Problem Display
PID: 101944 (1K6/2NN1RBB/1Q1P4/1np1p3/2k3bR/P2p1P2/PqpPn3/4r1b1 w - - 0 1)

Ekstrom, Sven Johan Adrian

Arbejder Magasinet, 1939

1K6/2NN1RBB/1Q1P4/1np1p3/2k3bR/P2p1P2/PqpPn3/4r1b1

#2

13 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxc5#
    • 1...Qd4
      • 2.Qxb5#
    • 1...Bh2
      • 2.Qxc5#
    • 1...Sed4
      • 2.Qxc5#
    • 1...Sbd4
      • 2.Sxe5#
  • Tries
    • 1.Qxb5+?
      • 1...Kd4
        • 2.Bxe5#
      • 1...Qxb5+!
  • Keys
    • 1.Bg8!
      • threat
        • 2.Rf4#
      • 1...Kd4
        • 2.Qxc5#
      • 1...Qd4
        • 2.Qxb5#
      • 1...Bd4
        • 2.Rf5#
      • 1...Sed4
        • 2.Qxc5#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Sbd4
        • 2.Sxe5#
      • 1...e4
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(g);P-FLIGHT,P_SPINP(j)::QAB1(F),XP(j)
    • Q(c);N_GUARD,N_SPINB(h),SBLOCK::QAB1(F),XS(i)
    • B(b);N_GUARD::QAR1(F),XP(j)
    • S(e);N_SPINB(h),S_CUTB(b)::QAR1(F),XP(j)
    • S(i);N_SPINB(h),P_PINQ(F),SBLOCK,S_CUTQ(c)::S(I),XP(k)
  • Tries
    • Try
      • Q(F);CHECK,P_SPINQ(F),XS(i)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(k)::B(K),XP(k)
      • Refutation
        • Q(c);CHECK,XQ(F)
  • Actual
    • B(L);
    • Threat
      • B(L)+R(J),DCHECK
    • Vars
      • K(g);P-FLIGHT,P_SPINP(j)::QAB1(F),XP(j)
      • Q(c);N_GUARD,N_SPINB(h),SBLOCK::QAB1(F),XS(i)
      • B(b);N_SPINB(h),SBLOCK::B(L)+R(J)
      • S(e);N_SPINB(h),S_CUTB(b)::QAR1(F),XP(j)
      • S(e);N_SPINB(h)::B(L)+R(J),DCHECK,XS(e)
      • S(i);N_SPINB(h),P_PINQ(F),SBLOCK,S_CUTQ(c)::S(I),XP(k)
      • P(k);N_SPINB(h)::B(L)+R(J)
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