MESON Chess Problem Database

Problem Display
PID: 135954 (7Q/4p1K1/1p4N1/1PPpR3/1pnk4/3P1pP1/5P2/2R1N3 w - - 0 1)

Agostini, Valerio

Mariani, Stefano

2nd Comm., Mat Plus, 2009

7Q/4p1K1/1p4N1/1PPpR3/1pnk4/3P1pP1/5P2/2R1N3

#2

11 + 7

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qh4#
    • 1...Sa3
      • 2.Qh4#
    • 1...Se3
      • 2.fxe3#
    • 1...Sa5
      • 2.Qh4#
    • 1...bxc5
      • 2.Qh4#
  • Tries
    • 1.Sxf3+?
      • 1...Kxd3
        • 2.Sf4#
      • 1...Kxc5!
    • 1.Sf4?
      • threat
        • 2.Rxd5#
      • 1...Kxc5
        • 2.Rxd5#
      • 1...Kxe5
        • 2.Kg6#
      • 1...Sxe5
        • 2.Se6#
      • 1...Se3
        • 2.Sxf3#
      • 1...e6!
    • 1.Qh5?
      • threat
        • 2.Rxd5#
      • 1...Kxc5
        • 2.Rxd5#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Se3
        • 2.fxe3#
      • 1...e6!
    • 1.Qa8?
      • threat
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Kxc5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Sxe5
        • 2.Qa1#
      • 1...Se3
        • 2.Qa1#
        • 2.fxe3#
      • 1...e6!
  • Keys
    • 1.Sxe7!
      • threat
        • 2.Rxd5#
      • 1...Kxc5
        • 2.Rxd5#
      • 1...Kxe5
        • 2.Kf7#
      • 1...Sxe5
        • 2.Sf5#
      • 1...Se3
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(c);::QAR(K)
    • S(c);OGATE::P(C),XS(c)
    • P(f);SBLOCK,XP(G)::QAR(K)
  • Tries
    • Try
      • S(B);CHECK,XP(a)
      • Vars
        • K(d);P-FLIGHT,XP(D)::S(I)
      • Refutation
        • K(d);P_SPINP(e),P_SPINS(c),S_FLIGHT,XP(G)
    • Try
      • S(I);
      • Threat
        • R1(H),XP(e)
      • Vars
        • K(d);P_SPINP(e),P_SPINS(c),S_FLIGHT,XP(G)::R1(H),XP(e)
        • K(d);S_FLIGHT,XR(H)::QAB(K)+K(J)
        • S(c);SBLOCK,XR(H)::S(I)
        • S(c);::S(B),XP(a)
      • Refutation
        • P(g);
    • Try
      • Q(K);
      • Threat
        • R1(H),XP(e)
      • Vars
        • K(d);P_SPINP(e),P_SPINS(c),S_FLIGHT,XP(G)::R1(H),XP(e)
        • S(c);OGATE,XR(H)::QAB1(K),XS(c)
        • S(c);OGATE::P(C),XS(c)
      • Refutation
        • P(g);
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);N_GUARD,XR(H)::QAB(K)
      • Refutation
        • P(g);
  • Actual
    • S(I);XP(g)
    • Threat
      • R1(H),XP(e)
    • Vars
      • K(d);P_SPINP(e),P_SPINS(c),S_FLIGHT,XP(G)::R1(H),XP(e)
      • K(d);S_FLIGHT,XR(H)::QAB(K)+K(J)
      • S(c);SBLOCK,XR(H)::S(I)
      • S(c);::S(I)
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