MESON Chess Problem Database

Problem Display
PID: 165517 (3B1n2/8/3kP1n1/1P2R3/K2b2r1/5N2/B3P3/3R1Q2 w - - 0 1)

Andersson, Gunnar

Tidskrift for Schack, 1929

3B1n2/8/3kP1n1/1P2R3/K2b2r1/5N2/B3P3/3R1Q2

#2

10 + 5

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Rxd4#
    • 1...Rg2
      • 2.Rxd4#
    • 1...Rg3
      • 2.Rxd4#
    • 1...Rg5
      • 2.Rxd4#
    • 1...Sxe6
      • 2.Rd5#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Sf7#
        • 2.Rd5#
      • 1...Kxe5
        • 2.Bc7#
      • 1...Sxe5
        • 2.Qxf8#
      • 1...Sxe6
        • 2.Rd5#
      • 1...Rf4
        • 2.Rd5#
      • 1...Sf4
        • 2.Sf7#
      • 1...Se7
        • 2.Sf7#
      • 1...Sh8
        • 2.Rd5#
      • 1...Rxg5!
    • 1.Qe1?
      • threat
        • 2.Qb4#
      • 1...Sxe6
        • 2.Rd5#
      • 1...Sd7!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Sc4#
      • 1...Bxe5+
        • 2.Se4#
      • 1...Kxe5
        • 2.Bc7#
      • 1...Sxe5
        • 2.Qxf8#
      • 1...Sxe6
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::R(A),XB(a)
    • S(e);SBLOCK,XP(I)::R1(H)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);N_SPINB(a),S_FLIGHT,XR(H)::B(J)
        • S(d);N_GUARD,SBLOCK,XR(H)::QAB(B),XS(e)
        • S(e);XP(I)::R1(H)
        • R(b);::R1(H)
        • S(d);::S(E)
        • S(d);::R1(H)
      • Refutation
        • R(b);XS(E)
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • S(e);SBLOCK,XP(I)::R1(H)
      • Refutation
        • S(e);
  • Actual
    • S(E);N_PINB(a)
    • Threat
      • S(E)
    • Vars
      • B(a);CHECK,SBLOCK,XR(H)::R(A)+S(E),DCHECK
      • K(c);S_FLIGHT,XR(H)::B(J)
      • S(d);N_GUARD,SBLOCK,XR(H)::QAB(B),XS(e)
      • S(e);SBLOCK,XP(I)::R1(H)
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