MESON Chess Problem Database

Problem Display
PID: 16503 (KB2Rb2/p4r2/N2p2R1/Qp3p2/3k1N2/pB4p1/6r1/5b2 w - - 0 1)

Cornell, CFT

Chess, 1941

KB2Rb2/p4r2/N2p2R1/Qp3p2/3k1N2/pB4p1/6r1/5b2

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Qb4#
    • 1...Rf6
      • 2.Bxa7#
    • 1...Bh6
      • 2.Rxd6#
    • 1...Bg7
      • 2.Rxd6#
  • Tries
    • 1.Qd2+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Rxd2!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe3#
      • 1...Re2
        • 2.Qb4#
      • 1...Re7
        • 2.Rxd6#
      • 1...Be2
        • 2.Qa1#
      • 1...Bd3
        • 2.Se6#
      • 1...Be7
        • 2.Bxa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(b);S_CUTB(a)::QAR2(C)
    • R(j);N_GUARD::B(G),XP(i)
    • B(k);N_GUARD::R(E),XP(h)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(C),XB(a)
      • Refutation
        • R(b);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • R(b);S_CUTB(a)::QAR2(C)
      • R(j);S_CUTB(k)::R(E),XP(h)
      • B(a);S_CUTR(b)::QAB(C)
      • B(a);SBLOCK::S(B)
      • B(k);S_CUTR(j)::B(G),XP(i)
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