MESON Chess Problem Database

Problem Display
PID: 58089 (8/8/7B/6R1/2bN4/1p3p2/3k1p1R/1Q5K w - - 0 1)

Anonymous

Source?, 0000

8/8/7B/6R1/2bN4/1p3p2/3k1p1R/1Q5K

#2

6 + 5

5695 Torre & Cavallo - Scacco! 2001
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Rg4#
      • 2.Rd5#
    • 1...Bf1
      • 2.Rc5#
    • 1...Be2
      • 2.Rc5#
    • 1...Bd3
      • 2.Rc5#
    • 1...Bb5
      • 2.Rc5#
    • 1...Ba6
      • 2.Rc5#
    • 1...Be6
      • 2.Rc5#
    • 1...Bf7
      • 2.Rc5#
    • 1...Bg8
      • 2.Rc5#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Re5#
      • 1...Ke2
        • 2.Re5#
      • 1...Ke3
        • 2.Re5#
      • 1...Bxb5!
    • 1.Qc2+?
      • 1...Ke1
        • 2.Qc1#
      • 1...Ke3
        • 2.Rg4#
        • 2.Rd5#
      • 1...bxc2!
  • Keys
    • 1.Se2!
      • threat
        • 2.Re5#
      • 1...f1Q+
        • 2.Rg1#
      • 1...f1R+
        • 2.Rg1#
      • 1...Kxe2
        • 2.Re5#
      • 1...Ke3
        • 2.Re5#
      • 1...Bxe2
        • 2.Rc5#
      • 1...fxe2
        • 2.Rg3#
      • 1...f1S
        • 2.Rd5#

This anticipates 546(1962)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • B(e);::B(F)+R(E)
    • B(e);N_SPINP(b)::B(F)+R(E)
  • Tries
    • Try
      • S(D);
      • Threat
        • B(F)+R(E)
      • Vars
        • K(a);P-FLIGHT::R(E)
        • K(a);N_SPINP(b),S_FLIGHT::B(F)+R(E),DCHECK
      • Refutation
        • B(e);XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAR2(A)
      • Refutation
        • P(c);XQ(A)
  • Actual
    • S(D);N_PINP(b)
    • Threat
      • B(F)+R(E)
    • Vars
      • P(b);CHECK::B(F)+R(E)
      • K(a);P-FLIGHT,P_SPINP(b),XS(D)::R(E)
      • K(a);S_FLIGHT::B(F)+R(E),DCHECK
      • B(e);SBLOCK,XS(D)::B(F)+R(E)
      • P(d);SBLOCK,XS(D)::B(F)+R(E)
      • P(b);::B(F)+R(E),DCHECK
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