MESON Chess Problem Database

Problem Display
PID: 45318 (8/5N2/2p1R1K1/4p3/2r1kp2/3n3B/4N3/3Q2B1 w - - 0 1)

Hirschenson, Aaron

Comm., Castellari Festival (Boletim da UBP), 1964

8/5N2/2p1R1K1/4p3/2r1kp2/3n3B/4N3/3Q2B1

#2

7 + 6

3841 The Art of Israeli Chess Composition 1983
3335 Cyclone 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Sg5#
      • 2.Qxd3#
    • 1...Kd5
      • 2.Rxe5#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Ra4
      • 2.Sc3#
    • 1...Rb4
      • 2.Sc3#
    • 1...Rd4
      • 2.Sc3#
    • 1...Sc1
      • 2.Sg5#
    • 1...Se1
      • 2.Sg5#
    • 1...Sb2
      • 2.Sg5#
    • 1...Sb4
      • 2.Sg5#
    • 1...Sc5
      • 2.Sg5#
  • Tries
    • 1.Sg3+?
      • 1...Kd5
        • 2.Rxe5#
        • 2.Rd6#
      • 1...fxg3!
    • 1.Sd6+?
      • 1...Kf3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Bf5+?
      • 1...Kd5
        • 2.Rxe5#
        • 2.Rd6#
      • 1...Kf3!
    • 1.Rxe5+?
      • 1...Kf3
        • 2.Sg5#
        • 2.Qxd3#
      • 1...Sxe5+!
    • 1.Rd6?
      • threat
        • 2.Sg5#
        • 2.Qxd3#
      • 1...Kf3
        • 2.Sg5#
        • 2.Qxd3#
      • 1...Rc3
        • 2.Sxc3#
        • 2.Sg5#
      • 1...Rd4
        • 2.Sc3#
        • 2.Sg5#
      • 1...Sc1
        • 2.Sg5#
      • 1...Se1
        • 2.Sg5#
      • 1...Sb2
        • 2.Sg5#
      • 1...Sb4
        • 2.Sg5#
      • 1...Sc5
        • 2.Sg5#
      • 1...Sf2!
  • Keys
    • 1.Qb3!
      • 1...Kf3
        • 2.Qxd3#
      • 1...Kd5
        • 2.Sc3#
      • 1...Rc1
        • 2.Sg5#
      • 1...Rc2
        • 2.Sg5#
      • 1...Rc3
        • 2.Sg5#
      • 1...Ra4
        • 2.Sg5#
      • 1...Rb4
        • 2.Sg5#
      • 1...Rd4
        • 2.Sg5#
      • 1...Rc5
        • 2.Sg5#
      • 1...Sc1
        • 2.Rxe5#
      • 1...Se1
        • 2.Rxe5#
      • 1...Sb2
        • 2.Rxe5#
      • 1...Sf2
        • 2.Rxe5#
      • 1...Sb4
        • 2.Rxe5#
      • 1...Sc5
        • 2.Rxe5#
      • 1...f3
        • 2.Qxc4#
      • 1...c5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 10
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(e),P_SPINS(a),S_FLIGHT::R1(E),XP(e)
    • R(b);N_GUARD::S(C),XR(b)
    • R(b);N_GUARD::S(C)
    • S(a);::S(G)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • P(d);XS(C)
    • Try
      • S(G);CHECK
      • Vars
        • K(c);N_SPINP(e),S_FLIGHT::QAR2(A),XS(a)
      • Refutation
        • K(c);N_SPINP(e),P_SPINS(a),S_FLIGHT
    • Try
      • B(D);CHECK
      • Refutation
        • K(c);N_SPINP(e),S_FLIGHT
    • Try
      • R(E);CHECK,XP(e)
      • Refutation
        • S(a);CHECK,XR(E)
    • Try
      • R(E);N_PINP(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::S(G)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Vars
      • K(c);N_SPINP(e),P_SPINS(a),S_FLIGHT::QAR2(A),XS(a)
      • K(c);N_SPINP(e),P_SPINR(b),S_FLIGHT::S(C)
      • R(b);::S(G)
      • S(a);N_GUARD::R1(E),XP(e)
      • P(d);SBLOCK::QAR2(A),XR(b)
      • P(f);OGATEB::QAB(A)
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