MESON Chess Problem Database

Problem Display
PID: 140348 (q7/b1B5/6p1/1B6/4k1pN/r3P3/4Q3/3R3K w - - 0 1)

Kiss, Janos

5th Prize, Magyar Sakkvilag, 1948

q7/b1B5/6p1/1B6/4k1pN/r3P3/4Q3/3R3K

#2

7 + 6

113 Shakhmaty v SSSR 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Bxc6#
    • 1...Qb8
      • 2.Bc6#
    • 1...Qc8
      • 2.Bc6#
    • 1...Qf8
      • 2.Bc6#
    • 1...Qh8
      • 2.Bc6#
    • 1...Ra1
      • 2.Qd3#
    • 1...Ra2
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Rxe3
      • 2.Qxg4#
    • 1...Ra4
      • 2.Qd3#
    • 1...Ra5
      • 2.Qd3#
    • 1...Ra6
      • 2.Qd3#
    • 1...Bxe3
      • 2.Qg2#
    • 1...Bd4
      • 2.Rxd4#
    • 1...Bb8
      • 2.Rd4#
    • 1...g3
      • 2.Qf3#
  • Tries
    • 1.Bd3+?
      • 1...Rxd3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Rd3?
      • threat
        • 2.Qxg4#
        • 2.Qg2#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...Bxe3
        • 2.Qg2#
        • 2.Qxe3#
      • 1...Bd4
        • 2.Rxd4#
        • 2.Qg2#
      • 1...Qc8
        • 2.Bc6#
        • 2.Qg2#
      • 1...Qf8
        • 2.Bc6#
      • 1...Ra2
        • 2.Qxg4#
      • 1...g3
        • 2.Qf3#
        • 2.Qg4#
        • 2.Qg2#
      • 1...Ra1+!
    • 1.Qc4+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Kxe3+!
    • 1.Qc2+?
      • 1...Rd3
        • 2.Qxd3#
      • 1...Kxe3+!
  • Keys
    • 1.Re1!
      • threat
        • 2.Qg2#
      • 1...Kd5
        • 2.Qc4#
      • 1...Rxe3
        • 2.Qd3#
      • 1...Bxe3
        • 2.Qc4#
      • 1...Qf8
        • 2.Bc6#
      • 1...Ra2
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 12
  • Sets
    • Q(f);N_GUARD::B(F),XQ(f)
    • Q(f);N_GUARD::B(F)
    • Q(f);N_GUARD,P_PINS(E)::B(F)
    • R(a);N_GUARD,P_PINR(A)::QAB1(C)
    • R(a);N_GUARD::QAB1(C)
    • R(a);N_GUARD::QAB1(C),XR(a)
    • R(a);P_SPINR(a),SBLOCK,XP(D)::QAR2(C),XP(c)
    • B(e);P_SPINB(e),SBLOCK,XP(D)::QAB(C)
    • B(e);N_GUARD::R1(A),XB(e)
    • B(e);N_GUARD::R1(A)
    • P(c);N_GUARD::QAB1(C)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • R(a);OGATE,XB(F)::QAB1(C),XR(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);OGATE,XR(A)::QAB1(C),XR(a)
        • Q(f);N_GUARD::B(F)
        • R(a);::QAR2(C),XP(c)
      • Refutation
        • R(a);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • B(e);N_GUARD,P_SPINB(e)::QAR1(C),XB(e)
      • Refutation
        • K(b);CHECK,P-FLIGHT,XP(D)
    • Try
      • Q(C);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(C),XR(a)
      • Refutation
        • K(b);CHECK,P-FLIGHT,XP(D)
  • Actual
    • R(A);
    • Threat
      • QAB(C)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • R(a);N_GUARD,P_SPINR(a),XP(D)::QAB1(C)
      • B(e);N_GUARD,P_SPINB(e),XP(D)::QAR2(C)
      • Q(f);N_GUARD::B(F)
      • R(a);N_GUARD::QAB1(C)
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