MESON Chess Problem Database

Problem Display
PID: 249642 (4rn1B/3b1B1p/1q1p3P/1p3kp1/3RN2p/1N2KP1P/2p5/2Q5 w - - 0 1)

Zilahi, Zoltan

Stella Polaris, 1969

4rn1B/3b1B1p/1q1p3P/1p3kp1/3RN2p/1N2KP1P/2p5/2Q5

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4+
      • 2.Sxd4#
    • 1...Rxe4+
      • 2.fxe4#
    • 1...g4
      • 2.fxg4#
      • 2.hxg4#
  • Tries
    • 1.Ke2?
      • threat
        • 2.Qxg5#
      • 1...Rxe4+
        • 2.fxe4#
      • 1...Se6
        • 2.Rd5#
      • 1...g4
        • 2.Qg5#
        • 2.fxg4#
        • 2.hxg4#
      • 1...Qd8!
    • 1.Kf2?
      • threat
        • 2.Qxg5#
      • 1...Qxd4+
        • 2.Sxd4#
      • 1...Rxe4
        • 2.fxe4#
      • 1...Qd8
        • 2.Sxd6#
      • 1...g4
        • 2.Qg5#
        • 2.fxg4#
        • 2.hxg4#
      • 1...Se6!
  • Keys
    • 1.Kd3!
      • threat
        • 2.Qxg5#
      • 1...Qxd4+
        • 2.Sxd4#
      • 1...Rxe4
        • 2.fxe4#
      • 1...Qd8
        • 2.Sxd6#
      • 1...Se6
        • 2.Rd5#
      • 1...g4
        • 2.Qg5#
        • 2.fxg4#
        • 2.hxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(f);CHECK,XR(F)::S(B),XQ(f)
    • R(j);CHECK,OGATE,XS(G)::P(D),XR(j)
  • Tries
    • Try
      • K(C);N_SPINR(F),P-FLIGHT
      • Threat
        • QAR1(A),XP(e)
      • Vars
        • R(j);CHECK,OGATE,XS(G)::P(D),XR(j)
        • S(k);N_PINS(G),S_CUTR(j)::R(F)
      • Refutation
        • Q(f);
    • Try
      • K(C);N_SPINS(G),S_FLIGHT
      • Threat
        • QAR1(A),XP(e)
      • Vars
        • Q(f);CHECK,XR(F)::S(B),XQ(f)
        • R(j);OGATE,XS(G)::P(D),XR(j)
        • Q(f);N_GUARD,N_PINR(F)::S(G),XP(g)
      • Refutation
        • S(k);
  • Actual
    • K(C);N_SPINR(F),N_SPINS(G),P-FLIGHT
    • Threat
      • QAR1(A),XP(e)
    • Vars
      • Q(f);CHECK,XR(F)::S(B),XQ(f)
      • R(j);OGATE,XS(G)::P(D),XR(j)
      • Q(f);N_GUARD::S(G),XP(g)
      • S(k);S_CUTR(j)::R(F)
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