MESON Chess Problem Database

Problem Display
PID: 39678 (3R3b/8/2pB4/5n2/K1k1b3/1p5r/2PQ4/3N4 w - - 0 1)

Hirschenson, Aaron

The Problemist, 2001

3R3b/8/2pB4/5n2/K1k1b3/1p5r/2PQ4/3N4

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.cxb3#
    • 1...Rh2
      • 2.cxb3#
    • 1...Rc3
      • 2.Sb2#
    • 1...Rh4
      • 2.cxb3#
    • 1...Rh5
      • 2.cxb3#
    • 1...Rh6
      • 2.cxb3#
    • 1...Rh7
      • 2.cxb3#
    • 1...Bf3
      • 2.Qd3#
      • 2.cxb3#
    • 1...Bd5
      • 2.Qb4#
    • 1...Bb2
      • 2.Sxb2#
    • 1...Bc3
      • 2.cxb3#
    • 1...Se3
      • 2.cxb3#
    • 1...Sg3
      • 2.Se3#
      • 2.cxb3#
    • 1...Sg7
      • 2.Sb2#
  • Tries
    • 1.Se3+?
      • 1...Sxe3
        • 2.cxb3#
      • 1...Rxe3!
    • 1.Bg3?
      • threat
        • 2.Qb4#
      • 1...Kc5
        • 2.Qb4#
      • 1...Bc3
        • 2.Qxc3#
      • 1...c5
        • 2.cxb3#
      • 1...Sd6!
  • Keys
    • 1.Be5!
      • threat
        • 2.Qb4#
      • 1...Kc5
        • 2.Qb4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Rc3
        • 2.Qxc3#
      • 1...c5
        • 2.Sb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • R(b);N_GUARD::P(B),XP(a)
    • R(b);S_CUTB(g)::S(A)
    • B(d);SBLOCK::QAR1(C)
    • B(g);N_GUARD::S(A),XB(g)
    • B(g);S_CUTR(b)::P(B),XP(a)
    • S(e);S_CUTR(b)::P(B),XP(a)
    • S(e);S_CUTB(g)::S(A)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • S(e);XS(A)::P(B),XP(a)
      • Refutation
        • R(b);XS(A)
    • Try
      • B(E);
      • Threat
        • QAR1(C)
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
        • B(g);N_GUARD::QAR1(C),XB(g)
        • P(f);SBLOCK::P(B),XP(a)
      • Refutation
        • S(e);
  • Actual
    • B(E);
    • Threat
      • QAR1(C)
    • Vars
      • K(c);P-FLIGHT::QAB1(C)
      • S(e);N_GUARD::QAR1(C)
      • R(b);N_GUARD::QAR1(C),XR(b)
      • P(f);SBLOCK::S(A)
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