MESON Chess Problem Database

Problem Display
PID: 96841 (8/1K6/5P2/R2N2k1/1Q4PR/6P1/5r1r/bB6 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

200 Assorted Problems (Wenman), 1945

8/1K6/5P2/R2N2k1/1Q4PR/6P1/5r1r/bB6

#2

9 + 4

6490 yacpdb 2009
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Qf4#
    • 1...Rd2
      • 2.Qf4#
    • 1...Re2
      • 2.Qf4#
    • 1...Rfg2
      • 2.Qf4#
    • 1...Rf4
      • 2.Qxf4#
    • 1...Rhg2
      • 2.Rh5#
  • Tries
    • 1.Sf4+?
      • 1...Kxf6
        • 2.Qf8#
      • 1...Be5!
    • 1.Qd2+?
      • 1...Rf4
        • 2.Qxf4#
      • 1...Rxd2!
    • 1.Qf8?
      • threat
        • 2.Qh6#
        • 2.Qg7#
        • 2.Qg8#
      • 1...Rb2+
        • 2.Sb4#
      • 1...Rxh4
        • 2.Qg7#
      • 1...Bxf6
        • 2.Qh6#
      • 1...Rxf6!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qg7#
      • 1...Rb2+
        • 2.Sb4#
      • 1...Rxf6
        • 2.Sc3#
      • 1...Bxf6
        • 2.Sf4#

Anticipated by 12(1930/I)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD::QAB1(C)
    • R(b);N_GUARD::QAB1(C),XR(b)
    • R(c);N_GUARD::R1(E)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);S_FLIGHT,XP(H)::QAR2(C)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(C),XR(b)
      • Refutation
        • R(b);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • R(b);CHECK,N_GUARD,S_CUTB(a)::R(F)+S(G)
        • R(c);XR(E)::QAR2(C)
        • B(a);XP(H)::QAB1(C)
      • Refutation
        • R(b);XP(H)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • R(b);CHECK,N_GUARD,S_CUTB(a)::R(F)+S(G)
      • R(b);N_GUARD,P_SPINR(b),XP(H)::R(F)+S(G)
      • B(a);N_GUARD,P_SPINB(a),XP(H)::R(F)+S(G)
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