MESON Chess Problem Database

Problem Display
PID: 187575 (1B4K1/1Q5p/pp2N3/Rb1P2P1/2p1k1P1/2P1p3/4B3/3r2b1 w - - 0 1)

Guida, Marco

The Problemist, 2018

1B4K1/1Q5p/pp2N3/Rb1P2P1/2p1k1P1/2P1p3/4B3/3r2b1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Qxh7#
    • 1...Bc6
      • 2.Qxh7#
    • 1...bxa5
      • 2.Sc5#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qe7#
        • 2.Qxh7#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Be8
        • 2.Qe7#
      • 1...h5
        • 2.Qe7#
        • 2.Qh7#
      • 1...h6
        • 2.Qe7#
        • 2.Qh7#
      • 1...Bd7!
    • 1.Rxb5?
      • threat
        • 2.Qxh7#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Rf1
        • 2.d6#
      • 1...h5
        • 2.Qh7#
      • 1...h6
        • 2.Qh7#
      • 1...axb5!
    • 1.Qc7?
      • threat
        • 2.Qe5#
      • 1...Kxd5
        • 2.Qxc4#
      • 1...Rxd5
        • 2.Qf4#
      • 1...Bh2!
    • 1.Qf7?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kxd5
        • 2.Bf3#
      • 1...Rxd5
        • 2.Qf3#
        • 2.Qf4#
      • 1...Rf1!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sf4#
      • 1...Kxd5
        • 2.Bf3#
      • 1...Rxd5
        • 2.Sc5#
      • 1...Bd7
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(f);::QAB(H),XP(i)
    • P(h);N_GUARD,XR(D)::S(G)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);OGATE,P_SPINR(a),XP(E)::QAB1(H),XR(a)
        • B(f);::QAR(H)
      • Refutation
        • B(f);
    • Try
      • R(D);XB(f)
      • Threat
        • QAB(H),XP(i)
      • Vars
        • R(a);OGATE,P_SPINR(a),XP(E)::QAB1(H),XR(a)
        • R(a);N_GUARD::QAB(H)+P(E)
        • P(i);::QAB(H)
      • Refutation
        • P(g);XR(D)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • K(e);P_SPINB(f),S_FLIGHT,XP(E)::QAB1(H),XP(d)
        • R(a);SBLOCK,XP(E)::QAR1(H)
      • Refutation
        • B(b);
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);P_SPINB(f),S_FLIGHT,XP(E)::B(A)
      • Refutation
        • R(a);
  • Actual
    • Q(H);
    • Threat
      • QAR(H)+S(G)
    • Vars
      • K(e);P_SPINB(f),S_FLIGHT,XP(E)::B(A)
      • R(a);SBLOCK,XP(E)::QAR(H)+S(G),DCHECK
      • B(f);::QAB(H),XP(i)
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