MESON Chess Problem Database

Problem Display
PID: 7430 (1BR3r1/2N2p2/B7/P6q/1r1k2n1/1p1N1Q2/pP1b1P2/K2R4 w - - 0 1)

Saunders, Denis M

The Problemist, 1999

1BR3r1/2N2p2/B7/P6q/1r1k2n1/1p1N1Q2/pP1b1P2/K2R4

#2

11 + 9

3936 The Wizard of Oz 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6
      • 2.Qd5#
    • 1...Qh2
      • 2.Qd5#
    • 1...Qh3
      • 2.Qd5#
    • 1...Qh4
      • 2.Qd5#
    • 1...Qd5
      • 2.Qxd5#
    • 1...Qh6
      • 2.Qd5#
    • 1...Qh7
      • 2.Qd5#
    • 1...Qh8
      • 2.Qd5#
    • 1...Be1
      • 2.Qf4#
    • 1...Bc3
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Bg5
      • 2.Qd5#
    • 1...Se3
      • 2.Qf4#
    • 1...Se5
      • 2.Qd5#
    • 1...f5
      • 2.Se6#
      • 2.Qd5#
    • 1...f6
      • 2.Se6#
  • Tries
    • 1.Ba7+?
      • 1...Qc5
        • 2.Bxc5#
        • 2.Qd5#
      • 1...Rb6!
    • 1.Rd8+?
      • 1...Qd5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Rxd8!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qc3#
      • 1...Kxc5
        • 2.Se6#
      • 1...Ke5
        • 2.Sb5#
      • 1...Qxc5
        • 2.Qf4#
      • 1...Qh3
        • 2.Qd5#
      • 1...Rc4
        • 2.Sb5#
      • 1...Se3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 13
  • Sets
    • Q(g);N_GUARD::QAR1(F)
    • Q(g);N_GUARD::QAR1(F),XQ(g)
    • B(b);N_GUARD::QAR2(F)
    • B(b);N_GUARD,P_PINP(C)::QAR2(F)
    • B(b);N_GUARD::QAR2(F),XB(b)
    • B(b);S_CUTQ(g)::QAR1(F)
    • S(f);S_CUTB(b)::QAR2(F)
    • S(f);S_CUTQ(g)::QAR1(F)
    • P(h);N_GUARD::S(I)
  • Tries
    • Try
      • B(J);CHECK
      • Refutation
        • R(d);P_SPINR(d)
    • Try
      • R(K);CHECK
      • Refutation
        • R(i);XR(K)
  • Actual
    • S(E);P_PINB(b)
    • Threat
      • QAB1(F)
    • Vars
      • K(e);N_SPINB(b),S_FLIGHT,XS(E)::R(K)+S(I),DCHECK
      • K(e);N_SPINB(b),S_FLIGHT::B(J)+S(I)
      • Q(g);SBLOCK,XS(E)::QAR2(F)
      • Q(g);N_GUARD::QAR1(F)
      • R(d);N_GUARD,SBLOCK::S(I)
      • S(f);N_GUARD::QAB1(F),XS(f)
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