MESON Chess Problem Database

Problem Display
PID: 267152 (K7/7p/3B3R/bR5r/1n4kp/3p1Npp/3N4/5Q1b w - - 0 1)

Rice, John Michael

The Problemist, 1955

K7/7p/3B3R/bR5r/1n4kp/3p1Npp/3N4/5Q1b

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Rxh4#
    • 1...Rg5
      • 2.Rxg5#
      • 2.Rxh4#
    • 1...Rxh6
      • 2.Rg5#
    • 1...Bxf3+
      • 2.Qxf3#
    • 1...g2
      • 2.Sh2#
  • Tries
    • 1.Rxb4+?
      • 1...Kf5
        • 2.Rf4#
        • 2.Qxd3#
        • 2.Qxh3#
      • 1...Bxb4!
    • 1.Rbxh5?
      • threat
        • 2.Rg5#
      • 1...Bxf3+
        • 2.Qxf3#
      • 1...Bd8!
    • 1.Rhxh5?
      • threat
        • 2.Rbg5#
        • 2.Rxh4#
        • 2.Rhg5#
      • 1...Bxf3+
        • 2.Qxf3#
      • 1...Sd5
        • 2.Rg5#
      • 1...h6
        • 2.Rxh4#
      • 1...Bd8!
    • 1.Rg6+?
      • 1...Rg5
        • 2.Rbxg5#
        • 2.Rgxg5#
      • 1...hxg6!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Rf4#
      • 1...Bxf3+
        • 2.Qxf3#
      • 1...Kxf5
        • 2.Qxh3#
      • 1...Rxf5
        • 2.Rxh4#
      • 1...Rxh6
        • 2.Rg5#
      • 1...Sd5
        • 2.Se5#
      • 1...g2
        • 2.Sh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(i);OGATE::R1(F),XP(g)
    • R(i);N_GUARD,XR(F)::R1(D)
    • B(a);CHECK,OGATE,XS(C)::QAB1(A),XB(a)
    • P(c);N_PINS(C)::S(C)
  • Tries
    • Try
      • R(D);CHECK,XS(e)
      • Refutation
        • B(h);XR(D)
    • Try
      • R(D);XR(i)
      • Threat
        • R1(D)
      • Vars
        • B(a);CHECK,OGATE,XS(C)::QAB1(A),XB(a)
      • Refutation
        • B(h);
    • Try
      • R(F);XR(i)
      • Threat
        • DUALS(3)
      • Vars
        • B(a);CHECK,OGATE,XS(C)::QAB1(A),XB(a)
        • S(e);N_PINS(C)::R1(F)
        • P(j);::R1(F),XP(g)
      • Refutation
        • B(h);
    • Try
      • R(F);CHECK
      • Refutation
        • P(j);XR(F)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • B(a);CHECK,OGATE,XS(C)::QAB1(A),XB(a)
      • K(f);N_GUARD,S_FLIGHT,XR(D)::QAB(A),XP(d)
      • R(i);OGATE,SBLOCK,XR(D)::R1(F),XP(g)
      • R(i);N_GUARD,XR(F)::R1(D)
      • S(e);N_PINS(C)::S(C)
      • P(c);N_PINS(C)::S(C)
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