MESON Chess Problem Database

Problem Display
PID: 265398 (4n3/5P1B/1n4KB/2Q3pR/1p2p1P1/3k3N/1Ppp2Rr/8 w - - 0 1)

Rice, John Michael

Die Schwalbe, 1972

4n3/5P1B/1n4KB/2Q3pR/1p2p1P1/3k3N/1Ppp2Rr/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Qc3#
    • 1...e3
      • 2.Kxg5#
  • Tries
    • 1.Kxg5?
      • threat
        • 2.Sf4#
      • 1...Rxh3
        • 2.Rxh3#
      • 1...Sd5!
    • 1.Rg3+?
      • 1...e3
        • 2.Rxe3#
      • 1...Ke2!
    • 1.Rxg5?
      • threat
        • 2.Sf4#
      • 1...e3
        • 2.Kh5#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Rxh3!
  • Keys
    • 1.Bxg5!
      • threat
        • 2.Sf4#
      • 1...Rxh3
        • 2.Rxd2#
      • 1...e3
        • 2.Kh6#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD::QAR1(E)
    • P(f);::B(J)+K(G),XP(g)
  • Tries
    • Try
      • K(G);P-FLIGHT,P_PINP(f),XP(g)
      • Threat
        • S(C)
      • Vars
        • R(c);OGATE,XS(C)::R(F),XR(c)
      • Refutation
        • S(h);
    • Try
      • R(B);CHECK
      • Vars
        • P(f);P_SPINP(f)::R1(B),XP(f)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(F);XP(g)
      • Threat
        • S(C)
      • Vars
        • P(f);::B(J)+K(G)
        • S(h);N_GUARD::R(F),XS(h)
      • Refutation
        • R(c);XS(C)
  • Actual
    • B(H);XP(g)
    • Threat
      • S(C)
    • Vars
      • R(c);N_GUARD,XS(C)::R1(B),XP(b)
      • P(f);::B(J)+K(G)
      • S(h);N_GUARD::QAR2(E),XS(h)
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