MESON Chess Problem Database

Problem Display
PID: 182599 (r7/2nPrN2/2R5/n1Bk3p/Q6K/1p3P2/8/7b w - - 0 1)

Geary, TW

British Chess Magazine, 1913

r7/2nPrN2/2R5/n1Bk3p/Q6K/1p3P2/8/7b

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re4+
      • 2.Qxe4#
    • 1...Rxd7
      • 2.Qe4#
    • 1...Rxf7
      • 2.Qe4#
    • 1...Se6
      • 2.Qe4#
  • Tries
    • 1.Ba7?
      • threat
        • 2.Rd6#
      • 1...Re4+
        • 2.Qxe4#
      • 1...Rxd7
        • 2.Qe4#
      • 1...Rxf7
        • 2.Qe4#
      • 1...Sxc6
        • 2.Qxb3#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Re6
        • 2.Rc5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb7
        • 2.Qc4#
      • 1...Se8
        • 2.Qb5#
      • 1...Rxa7!
    • 1.Bxe7?
      • threat
        • 2.Qe4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Bxf3!
    • 1.d8Q+?
      • 1...Rd7
        • 2.Qg5#
        • 2.Qe4#
        • 2.Qxd7#
      • 1...Rxd8!
    • 1.d8R+?
      • 1...Rd7
        • 2.Rxd7#
        • 2.Qe4#
      • 1...Rxd8!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Rd6#
      • 1...Re4+
        • 2.Qxe4#
      • 1...Rxd7
        • 2.Qe4#
      • 1...Rxf7
        • 2.Qe4#
      • 1...Sxc6
        • 2.Qxb3#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Re6
        • 2.Rc5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb7
        • 2.Qc4#
      • 1...Se8
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(g);CHECK,N_GUARD::QAB1(B),XR(g)
    • R(g);N_GUARD,XP(F)::QAB1(B)
    • R(g);N_GUARD,XS(G)::QAB1(B)
    • S(f);S_CUTR(g)::QAB1(B)
  • Tries
    • Try
      • B(D);
      • Threat
        • R1(E)
      • Vars
        • R(g);CHECK,N_GUARD::QAB1(B),XR(g)
        • R(g);N_GUARD,XP(F)::QAB1(B)
        • R(g);N_GUARD,XS(G)::QAB1(B)
        • S(c);N_GUARD,SBLOCK,XR(E)::QAB(B),XP(b)
        • S(f);N_GUARD::QAR2(B),XS(f)
        • R(g);SBLOCK::R1(E)
        • S(c);N_GUARD::QAB1(B),XS(c)
        • S(c);N_GUARD::QAB1(B)
        • S(f);N_GUARD::QAR2(B)
      • Refutation
        • R(h);XB(D)
    • Try
      • B(D);XR(g)
      • Threat
        • QAB1(B)
      • Vars
        • S(c);N_GUARD::QAB1(B),XS(c)
      • Refutation
        • B(a);XP(A)
    • Try
      • P(F);CHECK
      • Refutation
        • R(h);XQ(F)
    • Try
      • P(F);CHECK
      • Refutation
        • R(h);XR(F)
  • Actual
    • B(D);
    • Threat
      • R1(E)
    • Vars
      • R(g);CHECK,N_GUARD::QAB1(B),XR(g)
      • R(g);N_GUARD,XP(F)::QAB1(B)
      • R(g);N_GUARD,XS(G)::QAB1(B)
      • S(c);N_GUARD,SBLOCK,XR(E)::QAB(B),XP(b)
      • S(f);N_GUARD::QAR2(B),XS(f)
      • R(g);SBLOCK::R1(E)
      • S(c);N_GUARD::QAB1(B),XS(c)
      • S(c);N_GUARD::QAB1(B)
      • S(f);N_GUARD::QAR2(B)
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