MESON Chess Problem Database

Problem Display
PID: 204247 (2N1R1Q1/3p1n2/NR4n1/p2k4/2p2b2/2P1rP2/8/6BK w - - 0 1)

Driver, John Edward

The Hindu, 1957

2N1R1Q1/3p1n2/NR4n1/p2k4/2p2b2/2P1rP2/8/6BK

#2

9 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Qxf7#
    • 1...Rd3
      • 2.Qxf7#
    • 1...Rxf3
      • 2.Qxf7#
    • 1...Re4
      • 2.fxe4#
    • 1...Re5
      • 2.Sc7#
      • 2.Rd6#
    • 1...Be5
      • 2.Qxf7#
    • 1...Bg5
      • 2.Rd6#
    • 1...Bd6
      • 2.Rxd6#
    • 1...Bh6
      • 2.Rd6#
    • 1...Se5
      • 2.Se7#
      • 2.Rd6#
  • Tries
    • 1.Rxe3?
      • threat
        • 2.Qxf7#
      • 1...Se5
        • 2.Se7#
        • 2.Rd6#
      • 1...Sf8
        • 2.Se7#
      • 1...Sh8
        • 2.Se7#
      • 1...Bxe3!
    • 1.Re5+?
      • 1...Rxe5
        • 2.Sc7#
        • 2.Rd6#
      • 1...Bxe5
        • 2.Qxf7#
      • 1...Sxe5
        • 2.Se7#
        • 2.Rd6#
      • 1...Kxe5!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qd4#
      • 1...Rd3
        • 2.Qxf7#
      • 1...Re4
        • 2.fxe4#
      • 1...Re5
        • 2.Sc7#
      • 1...Be5
        • 2.Qxf7#
      • 1...Sge5
        • 2.Se7#
      • 1...Sfe5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD,XP(C)::QAB(I),XS(h)
    • R(a);N_GUARD::QAB(I),XS(h)
    • R(a);N_GUARD,XP(D)::QAB(I),XS(h)
    • R(a);OGATE::P(D),XR(a)
    • B(c);S_CUTR(a)::QAB(I),XS(h)
    • B(c);N_GUARD::R1(F)
    • B(c);N_GUARD::R1(F),XB(c)
  • Tries
    • Try
      • R(H);XR(a)
      • Threat
        • QAB(I),XS(h)
      • Vars
        • S(f);N_GUARD::S(G)
      • Refutation
        • B(c);XR(H)
    • Try
      • R(H);CHECK
      • Vars
        • B(c);SBLOCK,XR(H)::QAB(I),XS(h)
      • Refutation
        • K(e);N_SPINS(h),P-FLIGHT,XR(H)
  • Actual
    • Q(I);N_PINS(h)
    • Threat
      • QAR1(I)
    • Vars
      • R(a);N_GUARD::QAB(I),XS(h)
      • R(a);OGATE::P(D),XR(a)
      • R(a);S_CUTB(c)::S(E)
      • B(c);S_CUTR(a)::QAB(I),XS(h)
      • S(f);N_GUARD,S_CUTR(a)::S(G)
      • S(h);N_GUARD,S_CUTB(c)::R1(F)
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