MESON Chess Problem Database

Problem Display
PID: 106754 (8/Q1Npp3/3k2p1/P2N2K1/1P3pp1/2pnp3/3R2r1/B3R2B w - - 0 1)

Sabol, Frantisek

4/6 Place, Subotica Quick Ty., 2009

8/Q1Npp3/3k2p1/P2N2K1/1P3pp1/2pnp3/3R2r1/B3R2B

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qb6#
      • 2.Qa6#
    • 1...Se5
      • 2.Qc5#
    • 1...cxd2
      • 2.Qb6#
      • 2.Qa6#
    • 1...c2
      • 2.Qb6#
      • 2.Qa6#
    • 1...exd2
      • 2.Qb6#
      • 2.Qa6#
    • 1...e5
      • 2.Qb6#
      • 2.Qa6#
  • Tries
    • 1.Sxc3?
      • threat
        • 2.Qc5#
      • 1...Kc6
        • 2.Qb6#
      • 1...Rxd2
        • 2.S3b5#
      • 1...exd2
        • 2.Qb6#
      • 1...Ke5!
    • 1.Bxc3?
      • threat
        • 2.Qb6#
        • 2.Qa6#
      • 1...Kc6
        • 2.Qb6#
        • 2.Qa6#
      • 1...Sc5
        • 2.Qxc5#
        • 2.Qb6#
      • 1...Se5
        • 2.Qc5#
      • 1...Sxb4!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Qc5#
      • 1...Ke5
        • 2.Sc4#
      • 1...Kc6
        • 2.Qb6#
      • 1...Rxd2
        • 2.Sc4#
      • 1...cxd2
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(c);N_GUARD,SBLOCK::QAB1(I)
  • Tries
    • Try
      • S(G);P_PINS(c),XP(b)
      • Threat
        • QAB1(I)
      • Vars
        • K(g);N_SPINS(c),P-FLIGHT,P_SPINR(a)::QAR1(I)
        • R(a);N_SPINS(c),XR(D)::S(G)
        • P(d);N_SPINS(c),XR(D)::QAR2(I)
      • Refutation
        • K(g);N_SPINS(c),P_SPINP(d),S_FLIGHT
    • Try
      • B(A);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);N_GUARD::QAB1(I)
      • Refutation
        • S(c);XP(E)
  • Actual
    • S(G);P_PINS(c),XP(d)
    • Threat
      • QAB1(I)
    • Vars
      • K(g);N_SPINS(c),P_SPINP(b),S_FLIGHT::R(B)+S(G),DCHECK
      • K(g);N_SPINS(c),P-FLIGHT,P_SPINR(a)::QAR1(I)
      • R(a);N_SPINS(c),XR(D)::S(G)
      • P(b);N_SPINS(c),XR(D)::QAR2(I)
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