MESON Chess Problem Database

Problem Display
PID: 204679 (q7/3R1BnQ/b4p2/3Nkp1n/2P1P3/r1P1P3/1BKN4/8 w - - 0 1)

Benndorf, Gunter

Freie Presse, 1981

q7/3R1BnQ/b4p2/3Nkp1n/2P1P3/r1P1P3/1BKN4/8

#2

11 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Rxd5#
    • 1...Rxc3+
      • 2.Bxc3#
    • 1...Sf4
      • 2.exf4#
    • 1...Se6
      • 2.Qxf5#
    • 1...Se8
      • 2.Qxf5#
    • 1...fxe4
      • 2.Qxe4#
    • 1...f4
      • 2.Sf3#
  • Tries
    • 1.Re7+?
      • 1...Se6
        • 2.Rxe6#
      • 1...Kd6!
  • Keys
    • 1.Kd3!
      • threat
        • 2.Sf3#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Rxc3+
        • 2.Bxc3#
      • 1...Bxc4+
        • 2.Sxc4#
      • 1...Sf4+
        • 2.exf4#
      • 1...fxe4+
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(h);OGATE,XS(H)::R1(I),XQ(h)
    • R(a);CHECK,OGATE,P_SPINR(a),XP(D)::B(A),XR(a)
    • S(d);OGATE::P(E),XS(d)
    • S(g);N_GUARD::QAR1(K),XP(c)
    • P(c);OGATE,XP(G)::QAR1(K),XP(c)
    • P(c);::S(C)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::R1(I),XS(g)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(B);P_SPINP(D),S_FLIGHT
    • Threat
      • S(C)
    • Vars
      • Q(h);CHECK,OGATE,XS(H)::R1(I),XQ(h)
      • R(a);CHECK,OGATE,P_PINP(F),P_SPINR(a),XP(D)::B(A),XR(a)
      • B(e);CHECK,XP(F)::S(C),XB(e)
      • S(d);CHECK,OGATE::P(E),XS(d)
      • P(c);CHECK,OGATE,XP(G)::QAR1(K),XP(c)
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