MESON Chess Problem Database

Problem Display
PID: 250356 (2Q2B2/3P4/4P2r/1PNN2R1/2kP1pR1/7r/p7/K2B4 w - - 0 1)

Dutt, Sunder Chunder

Jerusalem Post, 1953

(First published on Tue Jun 30 1953)

2Q2B2/3P4/4P2r/1PNN2R1/2kP1pR1/7r/p7/K2B4

#2

12 + 5

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Rxf4#
    • 1...Kxb5
      • 2.Qa6#
  • Tries
    • 1.Sb3+?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kxb5!
    • 1.Sb4?
      • threat
        • 2.Sb3#
      • 1...Kc3
        • 2.Sb3#
      • 1...Kxb4
        • 2.Sb7#
      • 1...Kxb5
        • 2.Sa4#
      • 1...Rxe6
        • 2.Sxe6#
      • 1...Rb3
        • 2.Sxb3#
      • 1...Kxd4!
    • 1.Be2+?
      • 1...Kxd4
        • 2.Rxf4#
      • 1...Rd3!
    • 1.Bb3+?
      • 1...Kxd4
        • 2.Rxf4#
      • 1...Kxb5
        • 2.Qa6#
      • 1...Rxb3!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Sb3#
      • 1...Kc3
        • 2.Sb3#
      • 1...Kb4
        • 2.Sb7#
      • 1...Kxd4
        • 2.Sd5#
      • 1...Kxb5
        • 2.Sa4#
      • 1...Rxe6
        • 2.Scxe6#
      • 1...Rb3
        • 2.Sxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,P-FLIGHT,P_SPINP(d),XP(C)::R(D),XP(d)
    • K(c);OGATEB,S_FLIGHT,XP(E)::QAB1(K)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(K)
      • Refutation
        • K(c);S_FLIGHT,XP(E)
    • Try
      • S(G);
      • Threat
        • QAR(K)+S(F)
      • Vars
        • K(c);P-FLIGHT::QAR(K)+S(F)
        • K(c);N_GUARD,P-FLIGHT,XS(G)::B(L)+S(F)
        • K(c);N_GUARD,S_FLIGHT,XP(E)::R(H)+S(F)
        • R(e);XP(I)::QAR(K)+S(F),XR(e)
        • R(b);::QAR(K)+S(F),XR(b)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(d),XP(C)
    • Try
      • B(B);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(d),S_CUTR(b),XP(C)::R(D),XP(d)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • B(B);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT,P_SPINP(d),S_CUTR(b),XP(C)::R(D),XP(d)
        • K(c);N_GUARD,S_CUTR(b),S_FLIGHT,XP(E)::QAB1(K)
      • Refutation
        • R(b);XB(B)
  • Actual
    • S(G);XP(d)
    • Threat
      • QAR(K)+S(F)
    • Vars
      • K(c);P-FLIGHT::QAR(K)+S(F)
      • K(c);N_GUARD,P-FLIGHT::B(L)+S(F)
      • K(c);P-FLIGHT,XP(C)::R(D)+S(G)
      • K(c);N_GUARD,S_FLIGHT,XP(E)::R(H)+S(F)
      • R(e);XP(I)::QAR(K)+S(F),XR(e)
      • R(b);::QAR(K)+S(F),XR(b)
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