MESON Chess Problem Database

Problem Display
PID: 140079 (1N1n2b1/r1p5/1p3prn/1Nk2q1R/p1B5/2Q5/1P1K1P2/1R4B1 w - - 0 1)

Anonymous

Budapest Chess Club, 1932-1933

1N1n2b1/r1p5/1p3prn/1Nk2q1R/p1B5/2Q5/1P1K1P2/1R4B1

#2

10 + 11

56 The Problemist 1938

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5+
      • 2.Bd3#
    • 1...Qg5+
      • 2.f4#
    • 1...Rg3
      • 2.fxg3#
    • 1...Sc6
      • 2.Sd7#
    • 1...a3
      • 2.b4#
  • Tries
    • 1.Bf1+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Kd5!
    • 1.Ba2+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Kxb5!
    • 1.Be2+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Kd5!
    • 1.Bb3+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Kxb5!
    • 1.Bd3+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Kd5!
    • 1.Rxf5+?
      • 1...Bd5
        • 2.Bf1#
        • 2.Be2#
        • 2.Bd3#
        • 2.Rxd5#
      • 1...Sxf5!
    • 1.b3?
      • threat
        • 2.b4#
      • 1...Qd5+
        • 2.Bd3#
      • 1...Qg5+
        • 2.f4#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Sc6
        • 2.Sd7#
      • 1...axb3!
  • Keys
    • 1.Rc1!
      • threat
        • 2.Qa3#
      • 1...Qd5+
        • 2.Bd3#
      • 1...Qg5+
        • 2.f4#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Rg3
        • 2.fxg3#
      • 1...Sc6
        • 2.Sd7#
      • 1...a3
        • 2.b4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,S_CUTB(k)::QAR(F)+B(G)
    • Q(c);CHECK,S_CUTR(f)::B(B)+P(E)
    • R(f);OGATE::B(B)+P(E),XR(f)
    • S(j);SBLOCK::S(J)
    • P(a);N_GUARD::P(C)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • B(k);N_GUARD,P_SPINB(k)::QAR1(F),XB(k)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(G);CHECK
      • Vars
        • B(k);N_GUARD,P_SPINB(k)::QAR1(F),XB(k)
      • Refutation
        • K(b);P-FLIGHT,XS(H)
    • Try
      • B(G);CHECK
      • Vars
        • B(k);N_GUARD,P_SPINB(k)::QAR1(F),XB(k)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(G);CHECK
      • Vars
        • B(k);N_GUARD,P_SPINB(k)::QAR1(F),XB(k)
      • Refutation
        • K(b);P-FLIGHT,XS(H)
    • Try
      • B(G);CHECK
      • Vars
        • B(k);N_GUARD,P_SPINB(k)::QAR1(F),XB(k)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(I);CHECK,XQ(c)
      • Refutation
        • S(g);XR(I)
    • Try
      • P(C);
      • Threat
        • P(C)
      • Vars
        • Q(c);CHECK,S_CUTB(k)::QAR(F)+B(G)
        • Q(c);CHECK,S_CUTR(f)::B(B)+P(E)
        • B(k);OGATE,P_SPINB(k),XB(G)::QAR1(F),XB(k)
        • S(j);SBLOCK::S(J)
      • Refutation
        • P(a);XP(C)
  • Actual
    • R(A);
    • Threat
      • QAB(F)
    • Vars
      • Q(c);CHECK,S_CUTB(k)::QAR(F)+B(G)
      • Q(c);CHECK,S_CUTR(f)::B(B)+P(E)
      • B(k);OGATE,P_SPINB(k),XB(G)::QAR1(F),XB(k)
      • R(f);OGATE::B(B)+P(E),XR(f)
      • S(j);SBLOCK::S(J)
      • P(a);N_GUARD::P(C)
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